Is it safe to use a crockpot liner bag?
Based on 1 peer-reviewed studykitchen
Verdict: Avoid
No. Crockpot liners cook food in plastic at low temperatures for many hours.
What's actually in it
Crockpot liner bags are nylon or polyester film. They cook food at 80-95°C for 6 to 10 hours. That's long contact at elevated temperature: the exact conditions that maximize chemical migration.
What the research says
A 2025 study showed plastic in hot water releases many particles. Crockpot cooking is essentially long-slow poaching in a plastic bag.
Skip the liner and scrub the crockpot directly. Or use an Instant Pot with stainless steel insert.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Release of Nanoplastics from Polypropylene Food Containers. | J Agric Food Chem | 2025 |
What to use instead
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