I don’t want to microwave or pack food in plastic containers. What are my options?
There’s information on the risks of microwaving in plastic at the post on tempered glass bento boxes, which are microwave-safe but heavy. Stainless steel boxes like these or multi-tiered tiffin tins like ToGo Ware are lighter, and can be warmed in a stovetop steamer. Or line plastic boxes with an edible liner such as lettuce so that the food does not touch the plastic directly. Details are at the hot vs. cold lunch packing considerations post.
