Plastic food storage has a leaching problem that glass simply doesn't. Here's the short version of why.
Why is glass considered one of the safest food storage materials?
Glass is non-porous and completely inert, meaning it won't leach chemicals into food or drinks the way some plastics can, even with repeated heating and washing. That inertness holds up over years of daily use in a way plastic simply can't match.
This material is one of several nontoxic, non-fiber materials we cover in the “Beyond Fibers” section of our Natural Fibers 101 guide — worth a look if you're trying to make more intentional choices beyond just clothing.
Frequently Asked Questions
Can glass containers go in the microwave?
Most glass containers are microwave-safe, since glass doesn't react with heat or food the way some plastics can — always check for metal trim or decoration first.
Is glass better than plastic for storing leftovers?
Generally yes — glass won't absorb odors, stain, or leach chemicals into food over repeated use the way some plastics can over time.