How do I mark up induction compatibility for cookware in schema.org?

Use additionalProperty with propertyID 'inductionCompatible' and a boolean value: true or false. Add a description field explaining the mechanism: 'Induction-compatible cookware requires a ferromagnetic base (cast iron, carbon steel, or magnetic stainless steel 18/10 with added iron). Pure copper, aluminum, and non-magnetic stainless steel (18/10 without iron addition) are not induction-compatible without an added magnetic base layer.' This description is critical because AI agents fielding 'induction compatible pans' queries must understand that 'stainless steel' is ambiguous — 18/10 stainless is NOT induction-compatible, while 18/0 stainless IS. Tri-ply pans with an aluminum core and stainless exterior: the exterior stainless must be magnetic (18/0 or 430 stainless) for induction compatibility.

How do I encode oven-safe temperature in schema.org cookware data?

Use additionalProperty with propertyID 'ovenSafeTemp' and a QuantitativeValue: value as the temperature in Fahrenheit, unitCode 'FAH'. Add a description explaining what limits the temperature — typically the handle material: 'Oven-safe to 500°F / 260°C. Stainless steel handle with no plastic components. Above 500°F stainless handles become uncomfortably hot without mitts; lid knob is polished stainless, same temperature rating.' For cookware with different temperature limits for lids and handles, use two separate additionalProperty entries: propertyID 'ovenSafeTempBody' and propertyID 'ovenSafeTempLid'. AI agents answering 'oven-safe skillet for 450°F roasting' queries match the numeric value — do not use text like 'oven-safe up to high temperatures' without the number.

What schema.org properties distinguish PTFE, ceramic, and PFAS-free nonstick coatings?

Use additionalProperty propertyID 'coatingType' with a controlled vocabulary value: 'PTFE (PFOA-free)', 'Ceramic Sol-Gel', 'Hard-Anodized (no coating)', or 'Enameled Cast Iron'. Add propertyID 'pfasFree' with boolean true/false and a description explaining the distinction: 'PFAS-free ceramic coating contains no polytetrafluoroethylene (PTFE), perfluorooctanoic acid (PFOA), PFOS, GenX, or other per- and polyfluoroalkyl substances. Note: all modern PTFE cookware sold in the US is PFOA-free since 2013, but PTFE itself is a PFAS compound. If a query specifies PFAS-free, only ceramic sol-gel, carbon steel, cast iron, and stainless steel qualify.' This distinction is the most common cookware marketing mislabel AI agents encounter — 'PFOA-free' and 'PFAS-free' are not synonymous.

How do I mark up tri-ply vs clad stainless construction in schema.org?

Use additionalProperty propertyID 'constructionType' with values in a controlled vocabulary: 'Tri-Ply Clad (18/10 stainless / aluminum / 18/0 stainless)', 'Five-Ply Clad (stainless/aluminum/stainless/aluminum/stainless)', 'Disk-Bottom (stainless + aluminum disk base only)', 'Single-Layer Stainless', 'Cast Iron (bare)', 'Enameled Cast Iron', 'Carbon Steel'. Add propertyID 'wallThickness' with value in millimeters and unitCode 'MMT'. Clad vs disk-bottom is the single most important construction distinction for AI agents: clad construction extends heat evenly up the walls, preventing hot spots; disk-bottom construction heats only the base. For sauté pans and saucepans where food touches the walls, clad is superior. For pasta pots and stock pots where food sits in water, disk-bottom is adequate.

What certifications should cookware structured data include?

Use hasCertification for the following, where applicable: NSF International NSF/ANSI 2 (commercial kitchen safety — stainless steel cookware used in food service); California Prop 65 compliance (required disclosure if lead, cadmium, or other listed substances are present in glazes or coatings — absence of warning is itself a positive signal); PFAS-free third-party verification (for brands making PFAS-free claims, certificationIdentification should include the testing lab report number); PTFE manufacturer certification (Chemours Teflon or Whitford certification that the coating is PFOA-free). Include legalDisclaimer for any health-related coating claims: 'Nonstick coatings begin to degrade above 500°F (260°C). Do not preheat empty nonstick pans. PFOA-free means perfluorooctanoic acid was not used in manufacture; this does not mean the coating is suitable for high-heat dry cooking.' This disclaimer protects merchants and gives AI agents accurate safety context.

Optimization Guide

Shopify Cookware & Kitchen Equipment Schema — Material, Induction Compatible, Oven-Safe Temperature & Coating Structured Data

AI shopping agents handling queries like "PFAS-free nonstick skillet induction compatible oven-safe 450°F," "tri-ply stainless clad sauté pan dishwasher-safe," "pre-seasoned cast iron dutch oven 5.5 quart oven-safe 500°F," or "carbon steel wok compatible with gas and induction" need machine-readable material construction, surface coating, induction compatibility, and oven temperature ratings. Cookware is the highest-consideration kitchen purchase — material choice (PTFE vs ceramic vs cast iron vs carbon steel vs stainless) affects cooking method, heat source compatibility, maintenance requirements, and longevity. Shopify's default JSON-LD emits none of these signals, leaving every material-based and compatibility-based cookware filter query unmatched. This guide covers the complete schema.org structured data pattern for cookware: additionalProperty for construction and coating, hasCertification for NSF and Prop 65, and a cookware.* metafield Liquid template for the Dawn theme.

TL;DR Cookware requires five critical structured data signals: (1) additionalProperty propertyID: "constructionType" (Tri-Ply Clad / Cast Iron / Carbon Steel / Enameled / Disk-Bottom); (2) propertyID: "coatingType" (PTFE PFOA-free / Ceramic Sol-Gel / Hard-Anodized / None); (3) propertyID: "inductionCompatible" boolean; (4) propertyID: "ovenSafeTemp" in Fahrenheit with unitCode "FAH"; (5) propertyID: "dishwasherSafe" boolean. hasCertification for NSF/ANSI 2 (commercial) or PFAS-free third-party testing. Drive all 15 fields from cookware.* metafield namespace in Liquid.

Why Cookware Is Invisible to AI Material and Compatibility Queries

Cookware is the product category with the most complex material vocabulary in home goods. A buyer searching for "the best pan for induction" encounters six different correct answers depending on whether they want nonstick (PTFE or ceramic coating on magnetic stainless or aluminum base), stainless (tri-ply clad 18/10 exterior), cast iron (bare or enameled), or carbon steel (bare). Each material has distinct induction compatibility rules — and the rules are counterintuitive: "stainless steel" is not reliably induction-compatible (depends on alloy), while "aluminum" is not induction-compatible at all unless clad with a magnetic stainless layer.

AI agents receiving "induction compatible nonstick pan" return results based on product title text matches. A product titled "Premium Nonstick Skillet" with induction-compatible base gets zero signal from the title. A product titled "Hard-Anodized Induction-Compatible Nonstick Fry Pan" gets a text match — but only if the AI happens to look for those words. Structured data moves these signals from guessed text-matching to reliable property lookups.

The PFAS-free vs PFOA-free distinction is the most consequential misinformation gap in cookware commerce. All US-sold PTFE cookware has been PFOA-free since 2013, but PTFE itself is a PFAS compound. Buyers specifying "PFAS-free" are explicitly excluding PTFE. Without a propertyID: "pfasFree" boolean in structured data, AI agents cannot distinguish between these two product categories and will surface PTFE cookware in response to PFAS-free queries.

Cookware AI query types requiring structured data

Query type	Example query	Required schema signal	Missing from Shopify default
Induction compatibility	"induction compatible cast iron skillet"	`additionalProperty inductionCompatible: true`	Yes — not in default JSON-LD
PFAS-free filter	"PFAS-free nonstick pan"	`additionalProperty pfasFree: true + coatingType: "Ceramic Sol-Gel"`	Yes — text-matching only, PFOA/PFAS confusion
Oven-safe temperature	"skillet oven-safe to 500°F"	`additionalProperty ovenSafeTemp: 500 FAH`	Yes — prose only
Material construction	"tri-ply clad stainless sauté pan"	`additionalProperty constructionType: "Tri-Ply Clad"`	Yes — title text only
Dishwasher safe	"dishwasher safe stainless skillet"	`additionalProperty dishwasherSafe: true`	Yes — not in default JSON-LD
Size filter	"10-inch carbon steel skillet"	`additionalProperty diameter: 10 INH`	Yes — variant title only

Section 1: Tri-Ply Stainless Clad Skillet (Complete Schema)

{
  "@context": "https://schema.org",
  "@type": "ProductGroup",
  "name": "Ardente Triclad Skillet — 18/10 Stainless 3-Ply Clad, Induction Compatible",
  "description": "Professional-grade tri-ply clad skillet. 18/10 stainless interior bonded to aluminum core and 18/0 magnetic stainless exterior. Induction-compatible on all cooktop types. Oven-safe to 500°F with all-stainless handle. Dishwasher-safe.",
  "brand": {
    "@type": "Brand",
    "name": "Ardente"
  },
  "productGroupID": "ARDENTE-TRICLAD-SKILLET",
  "variesBy": ["https://schema.org/size"],
  "additionalProperty": [
    {
      "@type": "PropertyValue",
      "propertyID": "constructionType",
      "name": "Construction Type",
      "value": "Tri-Ply Clad (18/10 stainless / aluminum core / 18/0 magnetic stainless)",
      "description": "Full-clad tri-ply: all three layers extend from base to rim. 18/10 stainless interior (cooking surface), aluminum core (heat distribution), 18/0 magnetic stainless exterior (induction compatibility). Clad construction distributes heat evenly up the walls — superior to disk-bottom for sautéing, searing, and pan sauces."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "coatingType",
      "name": "Coating Type",
      "value": "None (bare polished 18/10 stainless interior)",
      "description": "No nonstick coating. Polished 18/10 stainless cooking surface develops a natural patina with use. Food releases with proper preheating technique (heat pan until water droplet beads and skips — Leidenfrost point). Not suitable for highly acidic foods during extended cooking."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "pfasFree",
      "name": "PFAS-Free",
      "value": true,
      "description": "No PTFE, PFOA, PFOS, GenX, or other per- and polyfluoroalkyl substances. Bare stainless construction contains no polymer coatings of any kind."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "inductionCompatible",
      "name": "Induction Compatible",
      "value": true,
      "description": "18/0 magnetic stainless exterior is ferromagnetic — compatible with all induction cooktops. Also compatible with gas, electric coil, electric smooth-top, and halogen cooktops. Full-clad construction prevents warping from induction's rapid, localized heating."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "ovenSafeTemp",
      "name": "Oven-Safe Temperature",
      "value": 500,
      "unitCode": "FAH",
      "description": "Oven-safe to 500°F (260°C). All-stainless handle with no plastic, silicone, or rubber components. Above 500°F handle becomes uncomfortably hot without oven mitts. Broiler-safe at standard rack distance."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "dishwasherSafe",
      "name": "Dishwasher Safe",
      "value": true,
      "description": "Dishwasher-safe. All-stainless construction with no coatings to degrade. Note: dishwasher detergents may cause temporary discoloration (rainbow patina) that is cosmetic and does not affect performance. Rinse promptly after dishwasher cycle to preserve finish."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "handleMaterial",
      "name": "Handle Material",
      "value": "18/10 Stainless Steel (riveted)",
      "description": "Triple-riveted 18/10 stainless handle. Riveted (not welded) for structural integrity over decades of use. No plastic, silicone, or rubber components — stays oven-safe to full 500°F rating."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "lidIncluded",
      "name": "Lid Included",
      "value": false,
      "description": "Lid sold separately. Compatible with Ardente Triclad lid (tempered glass with stainless rim) and standard restaurant-grade lids of matching diameter."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "compatibleCooktops",
      "name": "Compatible Cooktops",
      "value": "Gas, Electric Coil, Electric Smooth-Top, Induction, Halogen, Ceramic Glass",
      "description": "Universal cooktop compatibility. Magnetic exterior qualifies for induction; no coating restrictions for high-heat gas burners."
    }
  ],
  "hasCertification": [
    {
      "@type": "Certification",
      "name": "NSF/ANSI 2",
      "description": "NSF International certification for food equipment — verifies stainless steel grade, construction integrity, and cleanability for commercial kitchen use.",
      "issuedBy": {
        "@type": "Organization",
        "name": "NSF International"
      },
      "certificationStatus": "https://schema.org/CertificationActive"
    }
  ],
  "hasVariant": [
    {
      "@type": "Product",
      "name": "Ardente Triclad Skillet 8-inch",
      "sku": "TRICLAD-8IN",
      "size": { "@type": "SizeSpecification", "name": "8 inch" },
      "additionalProperty": [
        { "@type": "PropertyValue", "propertyID": "diameter", "name": "Diameter", "value": 8, "unitCode": "INH" },
        { "@type": "PropertyValue", "propertyID": "capacityLiters", "name": "Capacity", "value": 0.9, "unitCode": "LTR" }
      ],
      "offers": { "@type": "Offer", "price": "89.99", "priceCurrency": "USD", "availability": "https://schema.org/InStock" }
    },
    {
      "@type": "Product",
      "name": "Ardente Triclad Skillet 10-inch",
      "sku": "TRICLAD-10IN",
      "size": { "@type": "SizeSpecification", "name": "10 inch" },
      "additionalProperty": [
        { "@type": "PropertyValue", "propertyID": "diameter", "name": "Diameter", "value": 10, "unitCode": "INH" },
        { "@type": "PropertyValue", "propertyID": "capacityLiters", "name": "Capacity", "value": 1.4, "unitCode": "LTR" }
      ],
      "offers": { "@type": "Offer", "price": "109.99", "priceCurrency": "USD", "availability": "https://schema.org/InStock" }
    },
    {
      "@type": "Product",
      "name": "Ardente Triclad Skillet 12-inch",
      "sku": "TRICLAD-12IN",
      "size": { "@type": "SizeSpecification", "name": "12 inch" },
      "additionalProperty": [
        { "@type": "PropertyValue", "propertyID": "diameter", "name": "Diameter", "value": 12, "unitCode": "INH" },
        { "@type": "PropertyValue", "propertyID": "capacityLiters", "name": "Capacity", "value": 2.0, "unitCode": "LTR" }
      ],
      "offers": { "@type": "Offer", "price": "129.99", "priceCurrency": "USD", "availability": "https://schema.org/InStock" }
    }
  ]
}

Section 2: PFAS-Free Ceramic Nonstick Skillet

The PFAS-free cookware category is the fastest-growing segment in cookware. The schema pattern differs from stainless in three critical ways: coatingType must specify the ceramic sol-gel chemistry (not just "ceramic"), pfasFree: true must be present as a boolean, and ovenSafeTemp is lower because ceramic coatings degrade at lower temperatures than stainless.

{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "GreenCore Ceramic Pro Nonstick Skillet — PFAS-Free, 10-Inch, Induction Compatible",
  "description": "PFAS-free ceramic nonstick skillet. Sol-gel ceramic coating on hard-anodized aluminum body. Induction-compatible with magnetic stainless base. Oven-safe to 400°F. No PTFE, PFOA, PFOS, lead, or cadmium.",
  "brand": {
    "@type": "Brand",
    "name": "GreenCore"
  },
  "sku": "GREENCORE-10IN-CERAMIC",
  "additionalProperty": [
    {
      "@type": "PropertyValue",
      "propertyID": "constructionType",
      "name": "Construction Type",
      "value": "Hard-Anodized Aluminum with Magnetic Stainless Base",
      "description": "Hard-anodized aluminum body: electrochemically hardened aluminum surface (harder than stainless steel, 8× harder than standard aluminum). Bonded magnetic stainless steel base plate for induction compatibility. Sol-gel ceramic nonstick coating on interior cooking surface."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "coatingType",
      "name": "Coating Type",
      "value": "Ceramic Sol-Gel (PFAS-Free)",
      "description": "Sol-gel derived ceramic coating: silicon dioxide (SiO₂) matrix applied via wet-chemistry process, cured at high temperature. Contains no PTFE, PFOA, PFOS, GenX chemicals, lead, or cadmium. Nonstick performance is equivalent to PTFE at low-to-medium heat but degrades faster above 400°F and has shorter service life than PTFE (typically 2-5 years vs 5-10 years for quality PTFE)."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "pfasFree",
      "name": "PFAS-Free",
      "value": true,
      "description": "PFAS-free: contains no per- and polyfluoroalkyl substances of any kind. Ceramic sol-gel coating is silicone-dioxide based — no fluorine chemistry. Distinction from PFOA-free: modern PTFE pans are PFOA-free but still contain PTFE (a PFAS). This product contains no PTFE."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "inductionCompatible",
      "name": "Induction Compatible",
      "value": true,
      "description": "Magnetic stainless steel base bonded to hard-anodized aluminum body. Induction-compatible on all cooktop types including 120V and 240V induction. Aluminum body alone is not induction-compatible — the magnetic stainless base disk is required."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "ovenSafeTemp",
      "name": "Oven-Safe Temperature",
      "value": 400,
      "unitCode": "FAH",
      "description": "Oven-safe to 400°F (204°C). Ceramic coating begins to degrade above 450°F — below the degradation threshold for PTFE (around 500°F). Silicone handle sleeve is rated to 400°F. Remove silicone sleeve before oven use if unsure of temperature accuracy."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "dishwasherSafe",
      "name": "Dishwasher Safe",
      "value": false,
      "description": "Hand-wash recommended to preserve ceramic coating. Dishwasher detergents (high-alkaline, high-temperature) degrade ceramic nonstick coating significantly faster. Warm water and soft sponge extend coating service life."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "handleMaterial",
      "name": "Handle Material",
      "value": "Stainless Steel with Silicone Sleeve (removable)",
      "description": "Stainless steel core with removable food-grade silicone sleeve. Cool-touch grip for stovetop use. Remove sleeve for oven use (silicone is oven-safe to 400°F but sleeve is removable for cleaning convenience)."
    },
    {
      "@type": "PropertyValue",
      "propertyID": "diameter",
      "name": "Diameter",
      "value": 10,
      "unitCode": "INH"
    },
    {
      "@type": "PropertyValue",
      "propertyID": "metalUtensilSafe",
      "name": "Metal Utensil Safe",
      "value": false,
      "description": "Use silicone, wooden, or nylon utensils only. Metal utensils scratch ceramic coating and accelerate nonstick degradation. This applies to all ceramic sol-gel coatings — the SiO₂ matrix is harder than PTFE but still susceptible to sharp metal impact."
    }
  ],
  "hasCertification": [
    {
      "@type": "Certification",
      "name": "PFAS-Free Third-Party Verified",
      "certificationIdentification": "BV-TCS-2026-0422",
      "description": "Bureau Veritas testing confirms absence of PTFE, PFOA, PFOS, and 45 PFAS compounds. Test standard: EPA 533 / ISO 25101.",
      "issuedBy": {
        "@type": "Organization",
        "name": "Bureau Veritas Consumer Products Services"
      },
      "certificationStatus": "https://schema.org/CertificationActive"
    }
  ],
  "legalDisclaimer": "Ceramic nonstick coating is not indestructible. Use medium heat or below for best results and coating longevity. Overheating (above 500°F / 260°C) will permanently damage any nonstick coating. Not dishwasher safe — hand wash to extend service life.",
  "offers": {
    "@type": "Offer",
    "price": "79.99",
    "priceCurrency": "USD",
    "availability": "https://schema.org/InStock",
    "itemCondition": "https://schema.org/NewCondition"
  }
}

Section 3: Material and Construction Reference Tables

Cookware Material Comparison — AI Filter Signal Reference
Material	Induction Compatible	Max Oven Temp	Dishwasher Safe	PFAS-Free	Reactivity
Tri-Ply Clad Stainless (18/10 int / Al / 18/0 ext)	Yes (18/0 exterior)	500°F+	Yes	Yes	Low (non-reactive)
Hard-Anodized Aluminum (bare)	No (aluminum)	500°F	No	Yes	Low (anodized layer)
PTFE Nonstick (PFOA-free)	Varies (base-dependent)	450–500°F	No (degrades coating)	No (PTFE is PFAS)	None
Ceramic Sol-Gel (PFAS-Free)	Varies (base-dependent)	400°F	No (degrades coating)	Yes	None
Cast Iron (bare)	Yes	Unlimited (broiler-safe)	No (rust)	Yes	Low (seasoned patina)
Enameled Cast Iron	Yes	500°F	Yes (but shortens life)	Yes	None
Carbon Steel (bare)	Yes	Unlimited (broiler-safe)	No (rust)	Yes	Low (seasoned patina)
Copper (bare)	No	500°F	No (tarnishes)	Yes	High (reactive with acids)
Copper (tin-lined)	No	450°F (tin melts at 450°F)	No	Yes	None (tin lining)

Stainless Steel Grade Reference — Induction Compatibility
Grade	Chromium/Nickel	Magnetic	Induction Compatible	Common Use
304 / 18/10	18% Cr / 10% Ni	No (austenitic)	No	Interior cooking surface
316 / 18/10 Marine	18% Cr / 10% Ni + Mo	No (austenitic)	No	Medical / food processing
430 / 18/0	18% Cr / 0% Ni	Yes (ferritic)	Yes	Exterior layer in clad
409	11% Cr / 0% Ni	Yes (ferritic)	Yes	Budget induction base

Section 4: Dawn Theme Liquid Template (cookware.* Metafield Namespace)

{% comment %} cookware schema — cookware.* metafield namespace {% endcomment %}
{% assign cw = product.metafields.cookware %}

{% if cw %}
{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": {{ product.title | json }},
  "description": {{ product.description | strip_html | truncate: 500 | json }},
  "brand": { "@type": "Brand", "name": {{ product.vendor | json }} },
  "sku": {{ product.selected_or_first_available_variant.sku | json }},
  "additionalProperty": [
    {% if cw.construction_type %}
    {
      "@type": "PropertyValue",
      "propertyID": "constructionType",
      "name": "Construction Type",
      "value": {{ cw.construction_type | json }}
    },
    {% endif %}
    {% if cw.coating_type %}
    {
      "@type": "PropertyValue",
      "propertyID": "coatingType",
      "name": "Coating Type",
      "value": {{ cw.coating_type | json }}
    },
    {% endif %}
    {
      "@type": "PropertyValue",
      "propertyID": "pfasFree",
      "name": "PFAS-Free",
      "value": {{ cw.pfas_free | default: false | json }}
    },
    {
      "@type": "PropertyValue",
      "propertyID": "inductionCompatible",
      "name": "Induction Compatible",
      "value": {{ cw.induction_compatible | default: false | json }}
    },
    {% if cw.oven_safe_temp_f %}
    {
      "@type": "PropertyValue",
      "propertyID": "ovenSafeTemp",
      "name": "Oven-Safe Temperature",
      "value": {{ cw.oven_safe_temp_f | json }},
      "unitCode": "FAH"
    },
    {% endif %}
    {
      "@type": "PropertyValue",
      "propertyID": "dishwasherSafe",
      "name": "Dishwasher Safe",
      "value": {{ cw.dishwasher_safe | default: false | json }}
    },
    {% if cw.diameter_inches %}
    {
      "@type": "PropertyValue",
      "propertyID": "diameter",
      "name": "Diameter",
      "value": {{ cw.diameter_inches | json }},
      "unitCode": "INH"
    },
    {% endif %}
    {% if cw.capacity_liters %}
    {
      "@type": "PropertyValue",
      "propertyID": "capacity",
      "name": "Capacity",
      "value": {{ cw.capacity_liters | json }},
      "unitCode": "LTR"
    },
    {% endif %}
    {% if cw.handle_material %}
    {
      "@type": "PropertyValue",
      "propertyID": "handleMaterial",
      "name": "Handle Material",
      "value": {{ cw.handle_material | json }}
    },
    {% endif %}
    {% if cw.compatible_cooktops %}
    {
      "@type": "PropertyValue",
      "propertyID": "compatibleCooktops",
      "name": "Compatible Cooktops",
      "value": {{ cw.compatible_cooktops | json }}
    },
    {% endif %}
    {% if cw.wall_thickness_mm %}
    {
      "@type": "PropertyValue",
      "propertyID": "wallThickness",
      "name": "Wall Thickness",
      "value": {{ cw.wall_thickness_mm | json }},
      "unitCode": "MMT"
    },
    {% endif %}
    {% if cw.lid_included != nil %}
    {
      "@type": "PropertyValue",
      "propertyID": "lidIncluded",
      "name": "Lid Included",
      "value": {{ cw.lid_included | json }}
    },
    {% endif %}
    {% if cw.metal_utensil_safe != nil %}
    {
      "@type": "PropertyValue",
      "propertyID": "metalUtensilSafe",
      "name": "Metal Utensil Safe",
      "value": {{ cw.metal_utensil_safe | json }}
    },
    {% endif %}
    {
      "@type": "PropertyValue",
      "propertyID": "cookwarePieceType",
      "name": "Cookware Type",
      "value": {{ cw.piece_type | default: product.type | json }}
    }
  ],
  "offers": {
    "@type": "Offer",
    "price": {{ product.price | money_without_currency | json }},
    "priceCurrency": {{ shop.currency | json }},
    "availability": {% if product.available %}"https://schema.org/InStock"{% else %}"https://schema.org/OutOfStock"{% endif %},
    "url": {{ canonical_url | json }}
  }
}
{% endif %}

cookware.* metafield namespace reference

Metafield key	Type	Example value	Notes
cookware.construction_type	single_line_text	Tri-Ply Clad (18/10 / Al / 18/0)	Include alloy designations
cookware.coating_type	single_line_text	Ceramic Sol-Gel (PFAS-Free)	Include PFAS status in value
cookware.pfas_free	boolean	true	Critical: PFOA-free ≠ PFAS-free
cookware.induction_compatible	boolean	true	Magnetic base required
cookware.oven_safe_temp_f	number_integer	500	Fahrenheit — include handle limit
cookware.dishwasher_safe	boolean	false	Coatings typically not dishwasher safe
cookware.diameter_inches	number_decimal	10	Measured across cooking surface, not rim
cookware.capacity_liters	number_decimal	1.4	Fill capacity to rim
cookware.handle_material	single_line_text	18/10 Stainless (riveted)	Riveted vs welded is quality signal
cookware.compatible_cooktops	single_line_text	Gas, Electric, Induction, Halogen	Comma-separated list
cookware.wall_thickness_mm	number_decimal	2.6	Total clad thickness in mm
cookware.lid_included	boolean	false	Lids often sold separately
cookware.metal_utensil_safe	boolean	false	False for all coated surfaces
cookware.piece_type	single_line_text	Skillet / Fry Pan	Skillet/Sauté/Saucepan/Dutch Oven/Wok
cookware.pfas_test_report	single_line_text	BV-TCS-2026-0422	Third-party test report number for claims

Common Mistakes

Conflating PFOA-free and PFAS-free: All PTFE cookware sold in the US since 2013 is PFOA-free. PTFE itself is a PFAS compound. If your product is PTFE-based, set pfasFree: false. Only ceramic, stainless, cast iron, carbon steel, and truly PTFE-free alternatives warrant pfasFree: true. Mislabeling PTFE cookware as PFAS-free is a false advertising risk and corrupts AI agent query routing.
Induction compatibility without explaining the mechanism: "Stainless steel" is not reliably induction-compatible. Only 18/0 / 430 stainless (ferritic) is magnetic. 18/10 / 304 stainless (austenitic) is NOT magnetic. Always include which layer or component provides induction compatibility in the description field.
Oven-safe temperature at the body maximum, not the handle limit: A cast iron skillet body is oven-safe to 700°F+, but if it has a silicone handle sleeve, the limit is 400°F. Always declare the lowest-rated component's temperature as the ovenSafeTemp value.
Diameter measured at rim vs cooking surface: A "12-inch skillet" typically has a 10-inch cooking surface (flat bottom) with 2 inches of flared sidewall. Specify which measurement you're using in the description: "Diameter measured at rim. Cooking surface (flat base): 10.5 inches."
Missing reactivity information: Unlined copper, bare cast iron, and bare carbon steel are reactive with acidic foods (tomato, wine, citrus). AI agents answering "pan for tomato sauce" queries need reactivity data to avoid recommending reactive surfaces. Include this in the coatingType description field.