To freeze lemon zest, spread it in a thin layer on a baking sheet, freeze until solid, then transfer to an airtight container or freezer bag. This prevents clumping and preserves the zest's flavor.
Freezing lemon zest is a great way to preserve its bright, citrusy flavor for later use in baking, cooking, or cocktails. Here's a step-by-step guide:
Zest the Lemons: Use a microplane, grater, or zester to remove the outer, colorful layer of the lemon peel. Avoid the white pith underneath, as it's bitter.
Prepare a Baking Sheet: Line a baking sheet with parchment paper or a silicone mat. This prevents the zest from sticking.
Spread the Zest: Spread the lemon zest in a thin, even layer on the prepared baking sheet. Ensure the zest isn't clumped together, as this will cause it to freeze into a solid mass.
Freeze: Place the baking sheet in the freezer for about 1-2 hours, or until the zest is frozen solid. This pre-freezing step is crucial for preventing clumping.
Transfer to Storage: Once frozen, transfer the zest to an airtight container or a freezer bag. Label the container with the date.
Store: Store the lemon zest in the freezer for up to 6-12 months. It's best to use it within 6 months for optimal flavor.
For easy measuring, freeze the zest in small, pre-portioned amounts (e.g., 1 teaspoon or 1 tablespoon) in individual sections of an ice cube tray before transferring to a freezer bag. This way, you can grab exactly what you need without thawing the entire batch.