Is Freezing Sourdough Bread an Option?

Whether you're an avid sourdough baker using your own starter or you simply grabbed a loaf of sourdough from the bakery, you likely want to keep it fresh for as long as possible—especially if you can't finish the whole loaf in a couple of days (guilty as charged!). This brings up an important question: Can you freeze sourdough bread, or will it compromise its texture and flavor? And even more, is it possible to freeze sourdough starter if you're passionate about baking but can't keep up with feeding your yeast?

The quick answer is yes to both questions—but proper preparation is key to ensuring your sourdough remains as delicious as ever for your future baking or meals.

Is Freezing Sourdough Bread an Option?

The good news is that you can freeze sourdough bread! This is an excellent way to keep your bread fresh if you're unable to finish a loaf within a few days. Typically, a homemade loaf can last for three to five days at room temperature before it starts to go stale or develop mold.

For the best quality, frozen sourdough bread should be used within three months of freezing. However, it can still be consumed indefinitely after that time.

How to Freeze Sourdough Bread

The key to freezing sourdough bread is to protect it from air exposure to avoid freezer burn. If you're freezing a freshly baked loaf, make sure it cools completely first. You can freeze an entire loaf, a half loaf, or even individual slices. Wrap the bread securely in freezer-safe materials, such as plastic wrap, followed by aluminum foil, or place it in a freezer bag with all the air squeezed out.

If you're freezing individual slices, you can wrap and store them in smaller freezer bags. This way, you won't have to disturb the entire loaf when you just need a couple of slices for toast.

How to Thaw Sourdough Bread

When you're ready to enjoy your frozen sourdough, the quickest and most effective way to thaw it is by heating it up. For individual slices, simply pop them into the toaster or toaster oven. (Many toasters even have a special setting for frozen bread.)

If you're thawing an entire loaf, try placing it in a 325-degree oven for 20 to 30 minutes to bring it back to its fresh-baked glory.

Alternatively, you can let a frozen sourdough loaf thaw naturally on the countertop. It will usually take just a few hours, even for a full loaf.

Is Freezing Sourdough Starter Possible?

If you're a baker who’s fully embraced the sourdough craze, you likely have a jar of starter sitting in your kitchen. However, if you're not baking regularly, it can feel wasteful to keep feeding that wild yeast just to let it sit until you’re ready to make some bread.

Luckily, you can chill or even freeze your sourdough starter to slow down the yeast’s activity and keep it preserved until you're ready to bake. A starter stored in the fridge will remain in good condition for the occasional baker, who might only bake a loaf or two every couple of weeks. But if you need to store it longer—say, if you plan to take a break from baking over the summer—the freezer is the way to go.

How to Freeze Sourdough Starter

To freeze your sourdough starter, simply transfer a cup of it into a freezer-safe storage bag, squeeze out as much air as you can, and place it in the freezer. You won’t need to feed the starter again until you're ready to thaw it.

How to Thaw Sourdough Starter

When you're ready to bring your starter back into action, plan ahead! Not only will it need time to thaw, but you’ll also need to give it some care by feeding it flour and water to revive the yeast. It might take a few days for it to fully thaw and become active again.

To begin, remove your starter from the freezer and let it come to room temperature. Next, discard half of the starter and feed it as you normally would. You might need to repeat the feeding process a couple of times before your sourdough starter is ready for baking.