Microwave
Watch for metal, unsuitable plastic, sealed containers and unknown coatings.
CHECK BEFORE YOU HEATCan I heat
Can I heat
this?
Search a container or material. Compare microwave, oven and air-fryer use, then see the risks and checks that matter.
Oven
Confirm the complete product’s temperature rating, not only its main material.
Air fryer
Heat resistance is not enough: airflow and distance from the element matter.
Quick heat checks
Aluminum foilMicrowave: NO · Oven: CHECK→Stainless steel bowlMicrowave: NO · Oven: CHECK→Cast iron skilletMicrowave: NO · Oven: YES→Nonstick panMicrowave: NO · Oven: CHECK→Glass food containerMicrowave: CHECK · Oven: CHECK→Tempered glass bakewareMicrowave: CHECK · Oven: CHECK→Crystal glassMicrowave: NO · Oven: NO→Ceramic mugMicrowave: CHECK · Oven: CHECK→Stoneware dishMicrowave: CHECK · Oven: CHECK→Porcelain with gold trimMicrowave: NO · Oven: CHECK→Paper plateMicrowave: CHECK · Oven: NO→Paper towelMicrowave: CHECK · Oven: NO→