
Are Stainless Steel Containers Safe for Food Storage?
Food-grade stainless steel containers are safe for the fridge and freezer when used as directed. Learn about safe lids, cooling, thawing, and reheating.
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Food-grade stainless steel containers are safe for the fridge and freezer when used as directed. Learn about safe lids, cooling, thawing, and reheating.

Clean, intact food-grade stainless steel usually does not add flavor to coffee. Residue, lids, coatings, drink temperature, and lip contact can change taste.

Some stainless steel is magnetic. Ferritic grades like 430 and 409 are; austenitic 304 and 316 usually aren't. A grade-by-grade guide with a magnet test.