Can You Freeze Liquids in Glass Jars?

When it comes to freezing liquids, people often reach for plastic containers without giving it a second thought. However, the eco-conscious among us might wonder: Can you freeze liquids in glass jars?

Well, it turns out that you can, but there are some essential guidelines you should follow. This post will delve into the dos and don’ts of freezing in glass, so you can keep your chill while being extra chill about the environment.

Why Consider Glass?

  1. Eco-Friendly: Unlike plastic, glass is easily recyclable and doesn’t degrade over time.
  2. No Contaminants: Glass doesn’t release harmful chemicals into your food, unlike some plastic containers.
  3. Aesthetic Appeal: Let’s be honest, glass jars just look cooler in your freezer.

The Risks: Shattering Myths and Glass

Thermal Shock

One of the biggest risks when freezing liquids in glass is thermal shock. This occurs when a glass jar goes from one extreme temperature to another too rapidly, leading to cracks or even shattering.

Jar Shape Matters

Opt for jars with straight sides rather than those that narrow at the top. The latter can trap expanding liquids, increasing the chances of breakage.

The Dos

  1. Room to Breathe: Always leave about an inch or two of headspace at the top of the jar to allow the liquid to expand as it freezes.
  2. Chill Before Freezing: Place your liquid-filled glass jar in the refrigerator first, gradually decreasing its temperature before moving it to the freezer.
  3. Label Clearly: Use water-resistant labels to indicate the contents and date. Knowing what’s in the jar will save you future headaches.

The Don’ts

  1. Avoid Thin Glass: Opt for thicker, tempered glass like mason jars which are designed to handle extreme temperatures.
  2. Don’t Rush: Never move a glass jar from the freezer directly to a hot environment.
  3. Seal Properly: Use airtight lids to prevent freezer burn and food spoilage.


So, can you freeze liquids in glass jars? Absolutely, but exercise caution. Being mindful of the type of glass, the jar shape, and temperature shifts will keep your liquids safe and sound in their frosty home. Take these tips to heart and enjoy your extra chill storage method that’s kinder to Mother Earth.

In a world where convenience often takes precedence, opting for glass jars is a refreshing change. It’s a simple step toward a more sustainable lifestyle. Just remember, glass isn’t just for your Sunday brunch mimosas; it can be a freezer MVP too.