If you're taking part in the meal-preparation trend, otherwise known as "meal prep," then you know it's important to store cooked food in reusable containers. But you might also be aware that some types of containers can leach chemicals into the food inside.
Why Glass Food Storage Containers for Meal Prep Matter
Much of the research on potentially harmful chemicals in food-related products has focused on BPA (bisphenol A) and phthalates in plastic. BPA is used primarily to make polycarbonate plastic and epoxy resins used to make food and drink containers, among other things. Phthalates are a group of chemicals used to make plastics more flexible and resistant to leaking.
And while manufacturers have started making BPA-free products, there's growing concern that substitutes such as phthalates are just as bad for our health.
One thorough study of plastic packaging identified 906 chemicals that have been assessed for toxicity and possibly another 3377 with unknown toxicity.
Though more research needs to be conducted to determine exactly how these chemicals are affecting humans - it's probably best to avoid them whenever possible. Opting for glass food storage containers could be one way to do this.
Advantages of Glass Food Storage Containers Over Plastic
glass is naturally inert, so it won't chemically react with foods or beverages. This means it won't affect the flavor of what's inside, and it also won't transfer potentially harmful substances to the contents. Glass is easy to clean, recyclable, and sustainable.
Unlike plastic - glass won't absorb smells or stains, so it won't transfer flavors or odors from one type of food to another. Plus, unlike plastic, glass is microwave, freezer - oven, and dishwasher safe .
Glass containers can function as serveware, going right from the oven to the table. Glass is nontoxic and won't leach chemicals.
Are There Times When Glass Containers Aren't Ideal?
Unless you're paying for storage space in a separate kitchen or pantry, chances are you store your food containers in the cupboard or cabinet. So weight can be a legitimate consideration when choosing food storage containers for leftovers or meal prepping. Glass is significantly heavier than plastic, so if you prefer lightweight containers - glass may not be ideal.
That said, the glass containers we tested at America's Test Kitchen have sturdy, well-balanced lids that greatly reduce the likelihood of tip-overs. Glass can break if dropped, although the tempered glass containers we tested withstood being dropped from a height of three feet onto a hardwood floor.
glass can't be used under the broiler, on the stovetop - or on an open flame. And while glass can go in the freezer, it may crack or break when placed in the microwave without first reaching room temperature.
What to Look For in Glass Food Storage Containers for Meal Prep
The quality of the lid's gasket makes the difference between a leakproof container and a potential spill. Look for a silicone gasket that's one continuous piece that travels all the way around the lid. We recommend looking for containers that are clear so that you can easily see what's inside. Containers that are easy to stack and have measurements printed on the side are also preferable.
For hot foods, look for a container with a lid that can vent. Otherwise, pressure can build up and push the lid right off the container. Broad, flat surfaces help keep containers upright in crowded fridges.
Our Top-Rated Glass Container for Meal Preppers
The OXO Good Grips 3.5-Cup Smart Seal Rectangle Container was the highest-rated glass container tested by Cook's Illustrated. We liked that the container was clear - allowing you to easily identify the contents, and that it had measurements printed on the side. The container also has a broad, flat bottom that keeps it from toppling over in a crowded fridge, and it was easy to clean in the dishwasher.
OXO Smart Seal containers, no matter their size - will keep your food fresh with no mess. The container's lid has a pressure lever that locks in place to seal tightly. To open, simply press the lever, remove, and flip the lid.
Further reading
- https://blogs.extension.iastate.edu/answerline/2023/10/10/safe-food-storage-containers/
- https://creminternational.es/glass-meal-prep-container-benefits
- https://cookingwithelo.com/best-glass-food-storage-containers/
- https://www.towardspackaging.com/insights/food-storage-container-market-sizing
Disclaimer
This article is a personal reflection shared for general informational purposes only. It is not medical or health advice, and it is not a substitute for care from a qualified professional. Please talk to your doctor about your own health.
References
- https://blogs.extension.iastate.edu/answerline/2023/10/10/safe-food-storage-containers/ — blogs.extension.iastate.edu
- https://creminternational.es/glass-meal-prep-container-benefits — creminternational.es
- https://cookingwithelo.com/best-glass-food-storage-containers/ — cookingwithelo.com
- https://www.towardspackaging.com/insights/food-storage-container-market-sizing — towardspackaging.com
