Thu, May 21, 2026 at 10:20 PM UTC Kitchn and Yahoo may earn commission from links in this article. Credit: Ghazalle Badiozamani Five years ago, in an effort to use less plastic in the kitchen, I invested in my first Stasher bags. The reusable food-grade silicone bags with leak-proof seals are safe to use in microwaves, ovens up to 425 degrees, freezers, and dishwashers, so it’s no wonder that they’re a Kitchnteamfavorite.