How to Freeze Anything in a Mason Jar (2024)

FAQs

How to Freeze Anything in a Mason Jar? ›

Don't fill Mason jars to the top: Food expands as it freezes. As it expands, pressure can build in the jar and break the glass. For this reason, leave at least one inch of space at the top of the jar to allow for expansion. Wide mouth Mason jars typically include a freeze-fill line on the side for reference.

Don't fill Mason jars to the top: Food expands as it freezes. As it expands, pressure can build in the jar and break the glass. For this reason, leave at least one inch of space at the top of the jar to allow for expansion. Wide mouth Mason jars typically include a freeze-fill line on the side for reference.

It's recommended that you fill the jar enough so that there's at least one inch of space between the liquid and the top. Don't just move a piping hot chili in a jar into the freezer. Glass can crack if the temperature changes very quickly.

Luckily, jars do not have to be sterile to freeze with so you do not have to heat your jars. However, DO NOT place hot liquids in room temperature jars. You need to cool your product before placing it in jars.

Use only straight-sided mason jars and fill them to the freeze-fill line. What is this? On Ball- and Kerr-branded jars (made by the same company, for which I was a Newell Brands ambassador), the freeze-fill line is a thin line found just below the threads, about an inch from the rim.

Slip your jars into clean socks before putting them in the freezer. This prevents them from bumping against each other and breaking that way. Try Glasslock storage containers. The glass is tempered, so it's stronger and better able to handle temperature changes.

Mason jars made by companies like Ball and Quattro Stagioni are durable enough to stand up to your freezer's cold temperatures — just remember to use jars that are straight sided — but repurposed pasta jars and knockoffs probably aren't (they're more susceptible to thermal shock).

Jars with tapered sides or straight sides are freezer safe; shouldered jars are not.

Semi-Close and Freeze – gently screw the lid on your mason jar (but don't seal it all the way tight–this acts as a defense to help ensure your jars don't break), then place your mason jars upright in the freezer. Tighten the lid – after 24 hours, once your broth is completely frozen, tighten the lid on the mason jar.

Glass jars are freezer-safe in theory, but to avoid breaking when freezing mason jars, choose tempered glass jars with straight sides, leave enough headspace in the jars, and cool and thaw gradually.

Can you freeze spaghetti sauce in glass jars? ›

What Are the Best Containers to Use? Glass, plastic and even freezer-safe bags all work perfectly (just make sure the bags are heavy duty).

Boiling removes the oxygen remaining in the jar, which helps to form a tight seal between the lid and the rim. The heat used for this method of canning is sufficient to kill vegetative bacterial cells found in the food. Only high-acid food with a pH of 4.6 or less can be processed using the boiling water bath method.

Regular mouth jars are not recommended for freezing because of the shoulders. As we know, when liquid freezes it expands. Therefore it is critical that enough headspace is available to allow for this expansion. However, even leaving plenty of headspace the regular mouth jars can crack.

1. Fill Mason jars three-quarters full of Florida Orange Juice and screw on lid. Place jars in the freezer overnight.

Ideally the bottles should be frozen slanted at an angle of 45° to enlarge the surface area and allow for the expansion of the freezing liquid. Alternatively, use bottles with a wider diameter to reduce pressure on the glass walls. Rapid cooling can create thermal shock, which can cause the glass to break.

Most foods will freeze well in glass including fruit, vegetables, soups and sauces, baby food, leftovers, biscuits, and vegetable peels and scraps (great for making stock).

You can freeze both liquids (sauce, broth, soup, smoothies, etc.), and solids (cut up fruit, vegetables, beans, crackers, bread, etc.) in glass jars. Another good idea is to save any food scraps in glass jars and freeze them for later – you can use them to make veggie stock.