Can you successfully freeze sourdough starter for future use?

Preparing Your Starter for Freezing

To freeze your sourdough starter, you’ll need to prepare it by feeding and allowing it to rest. Start by feeding your starter with equal parts of flour and water, then let it sit at room temperature for a few hours until it becomes active and bubbly. Next, feed it again and let it rest for another 24 hours, allowing it to become stable and calm. This process, known as “retarding” the starter, will help it to enter a dormant state and make it easier to store.

Freezing and Storage

Once your starter is in a stable, dormant state, you can freeze it for future use. To do this, scoop the starter into an airtight container or freezer bag, making sure to press out as much air as possible before sealing. Label the container with the date and the words “Sourdough Starter” or “Frozen Starter.” Place the container in the freezer at 0°F (-18°C) or below. Frozen starter can be stored for up to 6 months.

Thawing and Reviving Your Starter

When you’re ready to use your frozen starter, remove it from the freezer and let it thaw in the refrigerator overnight. Once thawed, feed the starter with equal parts of flour and water, and let it sit at room temperature for a few hours until it becomes active and bubbly. This process may take longer than usual, so be patient and let your starter take its time to revive. After a few days, your starter should be ready to use in recipes.