Smart Organic Clay Multicooker
Cooks in an unglazed natural Zisha clay pot with an unglazed clay lid - no glaze, no lead-glaze question, no coating and no plastic or silicone in the food path. The standout on materials, with one caveat about naturally occurring lead in the raw clay.
Plastic-free verdict: Plastic-free
Food cooks in a removable pot of unglazed natural Zisha clay, and the models with a clay lid seal it with unglazed clay too - so there is no glaze (and therefore no lead/cadmium-glaze question), no nonstick coating, and no plastic or silicone anywhere the food touches. That is what sets it apart from every stoneware crock, whose glaze is the unknown. The electric base, controls, and outer housing are metal and plastic but sit entirely outside the clay pot. One honest caveat: because it is raw clay rather than a tested glaze, the clay does carry trace naturally occurring lead - VitaClay's third-party testing reports the food-contact clay as below FDA/Prop 65 limits with no detectable leaching, but a lead-testing advocate (Tamara Rubin) measured high total lead in the non-food-contact metal liner/housing, so "lead-free" is truer of the food path than of the whole appliance.
Verification: Manufacturer confirmed · reviewed 2026-07-05
What it's made of
| Part | Material | Food contact |
|---|---|---|
| cooking pot unglazed natural Zisha clay - no glaze and no coating; removable | Ceramic / Stoneware / Porcelain | Yes |
| inner lid (clay-lid models) unglazed clay lid on the clay-pot-set models; dome/stoneware or glass lid on some variants | Ceramic / Stoneware / Porcelain | Yes |
| outer lid (dual-lid models) some models use a glass outer lid over the clay pot; sits above the food | Soda-Lime Glass | No |
| electric base / heating element / housing metal-and-plastic electric base; the clay pot lifts out, so none of it touches food | Plastic (other / unspecified) | No |
An electric multicooker (slow cook, rice, stew, soup, yogurt) built around a removable pot of unglazed natural Zisha clay rather than a glazed stoneware crock or a coated metal insert. Because the clay is unglazed, it sidesteps the single biggest slow-cooker material question - lead or cadmium in the glaze - and there is no nonstick coating and nothing plastic or silicone in the food path, which is why it is the material standout in the category. The honest asterisk is that raw clay is not a tested glaze: VitaClay publishes third-party lab reports showing the food-contact clay below FDA/Prop 65 lead limits with no detectable leaching, but independent testing found high total lead in the non-food-contact metal liner and heating parts, so its "lead-free" marketing is best read as applying to the clay that touches food, not the entire unit. Cook in it and the food only ever meets unglazed clay (and, on some models, glass).
Pros
- Unglazed natural clay pot - no glaze, so no lead/cadmium-glaze question
- No nonstick coating and no plastic or silicone in the food path
- Removable clay pot; food never touches the electric base
- Manufacturer publishes third-party lead/cadmium test reports on the clay
Cons
- Raw clay carries trace naturally occurring lead; independent testing found high lead in non-food-contact metal parts, so "lead-free" overstates the whole unit
- Clay pot is fragile and can crack if thermally shocked or dropped
- Electric base is metal and plastic (out of the food path) and not very repairable
- Smaller capacity and pricier than a mass-market crock
Categories: Slow Cookers
Sources
Every material claim above is backed by these. This is the scattered info we centralized.
- manufacturer https://vitaclaychef.com/pages/faqs VitaClay states the pot is unglazed Zisha clay with no glazes/coatings, third-party FDA-lab tested to undetectable lead (0.01 ppm accuracy) and certified to FDA / CA Prop 65 / RoHS
- manufacturer https://vitaclaychef.com/products/vitaclay-replacement-slow-cooker-clay-pot-and-lid-set-4-quarts-8-measuring-cup-for-models-of-vm7900-and-vf7700 clay-pot-set replacement includes both an unglazed clay pot and a clay lid
- review https://tamararubin.com/2018/11/yet-another-lead-free-product-tests-positive-for-lead-vitaclay-chef-slow-cooker-70400-ppm-lead-please-click-and-read-for-more-info/ independent XRF testing found ~71 ppm lead in the food-contact clay interior (within standards) but ~70,400 ppm in the non-food-contact metal liner and 321 ppm in the heating element - the basis for the "lead-free overstates the whole unit" caveat
- review https://detoxinista.com/vitaclay-non-toxic-slow-cooker/ independent review describing the unglazed clay pot and how food only contacts natural clay