Freeze Foods without Plastic: 6 Sustainable Household Hacks

Photos: © Utopia

When it comes to freezing leftovers or meal prep, many of us turn to plastic freezer bags or containers made of plastic. However, plastic isn’t great for your health or the environment: Here are some sustainable plastic-free alternatives to storing your food in conventional containers.

Even if we found time to cook ourselves a fresh homemade meal every single day of the week, sometimes pulling a dish or particular ingredients out of the freezer is just the quickest and simplest option. Whether it be fruit and vegetables, sauces and herbs, or even an entire pre-made meal: There’s quite a lot of delicious food out there you can prepare yourself, portion accordingly and store in the freezer until a later date – all without using an ounce of plastic.

Here, Utopia shows you a handful of sustainable household hacks for storing all sorts of foods in the freezer:

Freeze Soups, Sauces and Purées in Resealable Glass Jars

Freeze food without plastic frozen food storage ideas
Storing food in glass jars is by far the easiest way to go plastic-free during meal prep or when salvaging last night’s leftovers. (Photo: CC0 Public Domian / Unsplash - Ella Olsson (L); © Utopia (R))

When it comes to soups, homemade applesauce or fresh berries, it’s actually surprisingly easy to go plastic free when it comes to storing these in the freezer.

Forget the plastic Tupperware and freeze foods directly in resealable glass jars – these you probably already have at home or can find cheap at any local supermarket. Mason or Ball jars work the best as they’re thick enough to withstand the cold and liquid expansion over time in the freezer. Other glass jars that may be thick enough to reuse are honey jars, pickles, and olives. Nonetheless, it may be a good idea to hold one up to a mason jar for comparison before freezing.

As goes for all frozen liquids, try to use only wide mouth jars and leave a good inch (or fill two thirds full) to allow for the contents to expand. You can also pour about half an inch of water over any frozen food in a glass jar to further protect it from freezer air. When it comes to thawing, simply rinse this ice layer off with warm water before tossing your dish in the pot or microwave.

An important rule for freezing foods: Instead of sealing the glass jar and sticking it directly in the freezer, leave the jar open in the freezer for a couple of hours and screw it shut later. Set a timer if you think you’ll forget.

Utopia’s tip: Freezing food in glass jars is a great way to conserve seasonal produce for longer periods of time. Keep enjoying these even longer with our sustainable guide on how to reuse vegetable scraps.

Metal and Glass Leftover Containers

Freeze food without plastic plastic-free sustainable household hacks BKLYN bento box
Say goodbye to plastic lids and invest in sustainable freezer storage containers with silicone tops. (Photo: © BKLYN BENTO)

Freezing foods in glass jars is a breeze: Mason or Ball jars with metal screw-on tops are widely available. However, a lot of larger glass food storage containers on the market today feature plastic lids. If you can find them, we recommend meal prep or storage containers with silicone lids, these are comparatively more environmental friendly and do not contribute as much to the growing problem of plastic in the ocean as typical forms of plastic packaging. Tip: Many larger glass baking dishes are also freezer-safe.

Another effective no-plastic option are stainless steel food storage containers, most of which are entirely made of stainless steel, including the lid. Some stainless steel food storage containers have silicone tops instead to make them leak-proof. Here are some options:

  • Stainless Steel 3-in-1 Bento Lunch Box found on Amazon**
  • Stainless Steel Bento Lunch Box Container with Lock Clips, 1200ML found on Amazon**
  • 2 PCs Set Stainless Steel Food Storage Containers with Silicone Lids found on Amazon**.
  • 4PCs Set Stainless Steel Bento Boxes with Silicone Lids found on Amazon**.

You may also enjoy reading: Life without Plastic: Easy Tips for Everyone

Utopia’s tip: Check out these healthy meal prep ideas and easily make flexible frozen dishes part of your weekly routine. Simply take your pre-made soup, chilli, vegetable fix etc. out of the freezer, thaw and you’ve got yourself a “meal-to-go”. The added benefit of storing healthy meal prep dishes in the freezer is that you can decide on the fly – meals stored in the fridge only give you a couple days’ wiggle room.

Waxed Paper

How to freeze food without plastic waxed paper wraps
Waxed paper is a classic route among sustainable storage methods. (Photo: CC0 Public Domain / Unsplash - Carrie Beth Williams (L); © Bee's Wrap (R))

Some additional short-term solutions to storing food plastic-free in the freezer are unbleached butcher paper or waxed paper sheets or bags. Butcher paper doesn’t seal the food as well as wax layered paper does, but there’s nothing wrong with leaving your food wrapped in it as an initial layer. Just remember: One layer of butcher or waxed paper is good for short term freezes only (2-3 weeks at the most). For periods longer than this, wrap your frozen goods with another two to three layers.

Quality waxed paper has become rather scarce nowadays. Instead of buying single-use freezer paper, how about trying beeswax food wraps made of cotton:

  • Reusable Beeswax Food Wraps with Jojoba Oil from Bee’s Wrap found on Amazon**.
  • Premium Organic Beeswax Food Wrap by ENEY found on Amazon**.

Freeze Foods Without Plastic: Cotton Bags

Vejibag plastic-free freezer food storage storing without plastic
Wrap up a leftover loaf of baguette with cotton food storage bags. (Photo: © Utopia)

Yep, this no-plastic option works just as well: Freeze all types of bread as easily as ever with cotton bags.

Take the extra slices you won’t eat yet or bring the cotton bag right into the bakery yourself, fill it up and your fresh bread is ready to freeze.

If you freeze bread using cotton cloth bags, make sure that the bread is wrapped up thoroughly and the bags are sealed tightly. This cloth bag method for freezer storage is best suited for shorter periods of time – that is, around a couple weeks. Here are a couple options to consider:

  • Large Reusable Organic Cotton Storage Bags, 5 Pack by Small Fish found on Amazon**
  • Organic Cotton Produce Bags by Leafico, 12 Pcs found on Amazon**

Read more: Plastic-Free Shopping: 3 Easy Tips for Waste Reduction

Ice Cube Trays

How to freeze foods without plastic
Ice cube trays are a simple and easy storage method which allow for precise portion control for a wide range of different freezer-friendly foods. (Photo: © Utopia)

Go plastic-free by ridding your house of plastic single-use ice cube bags and invest in a stainless steel ice cube tray. This freezer food storage is a great idea for creative cooks who use these portion sizes often. For example, you can pre-slice your garden fresh herbs and pack them away neatly into your ice cube tray along with a couple drops of olive oil. This leaves you with pre-portioned foods that take but minutes to thaw.

You can also freeze sauces, baby food and pre-portioned fixings such as this homemade vegetable broth with these quick and easy method.

Check out some sustainable stainless steel options here:

  • Stainless Steel Ice Cube Tray by ecozi found on Amazon**.
  • 18 Slot Easy Removal Metal Ice Trays found on Amazon**.

Waxed Cartons

Store food Plastic-free
Freeze food with waxed paper cartons and do your part in reducing unnecessary plastic waste. (Photo: CC0 Public Domain / Unsplash - Madalyn Cox (L); Eiliv-Sonas Aceron (R))

Alongside waxed paper, waxed cartons will also do the trick when it comes to storing foods for a couple weeks in the freezer. Simple take your recently used milk, juice and cream cartons, give them a thorough wash and put them to further use. This creative and sustainable waxed carton upcycling method is great for stocks and soups as the makeshift containers are waterproof and allow for expansion.

To freeze your stocks and soaps in a waxed carton, cut open the top and seal with freezer tape. If you want to go completely waste-free, leave the open waxed container in the freezer for a couple hours as you would a glass jar, close and fold the top in and stuff in a cloth or similar freezer-safe non-plastic bag.

Read on: How to Freeze Spinach: Preserving Freshness.

Why Not Go Completely Package-Free?

How to freeze foods without plastic bananas tomatoes peaches no packaging
Of course, there are always a couple exceptions: These foods don’t any sort of special (plastic) packaging for the freezer whatsoever. (Photo: © Utopia)

Believe it or not, there are some foods out there that need no freezer packaging at all: Tomatoes (those with a low water content), bananas and peaches. There’s no need to use plastic ziplock bags here. Just toss them right on in and their skins will slip off easily once thawed.

Fruits and vegetables are the most common types of food that go to waste. Freeze the fruit you know won’t make it until the end of the week and help avoid food waste.

Freeze Foods without Plastic: 6 Sustainable Household Hacks
Pin it! (Photo: © Utopia)

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This article was translated from German to English by Evan Binford. You can view the original here: Lebensmittel einfrieren ohne Plastik: 5 Tipps.

** Links to retailers are partially affiliate links: If you buy here, you actively support Utopia.org because we get a small portion of the proceeds.

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