Is it safe to use a clay pot for cooking slow tomato sauces?
Unglazed clay pots are safe. Glazed clay pots may contain lead in the glaze unless certified food-safe.
What's actually in it
The answer to this question depends on conditions: what material, what temperature, how often, and what alternatives you have available.
Research shows that under some conditions this is low risk, and under others, chemical transfer is measurable. Understanding when matters.
What the research says
Unglazed clay pots are safe. Glazed clay pots may contain lead in the glaze unless certified food-safe.
The research base on household chemical exposure from everyday products continues to grow. Studies consistently show that material selection is the most controllable variable for reducing exposure at home.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Simultaneous determination of six microplastics in drinking water by pyrolysis-gas chromatography/mass spectrometry. | Anal Methods | 2026 |
What to use instead
Browse our vetted, non-toxic alternatives. Every product is third-party certified.
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