How to freeze Basil for Pesto and Sauces

Freezing basil is an excellent way to preserve its fresh flavor for making pesto, sauces, and other dishes. While basil loses some of its vibrant color when frozen, its taste remains intact, especially when prepared properly. Here’s how to freeze basil effectively:

Method 1: Freezing Whole or Chopped Basil Leaves

This method works well if you want to use basil for sauces or garnishes later.

Step 1: Select Fresh Basil

• Choose vibrant, unbruised leaves without any signs of wilting or yellowing.

Step 2: Wash and Dry

1. Rinse the basil leaves under cold water to remove dirt.
2. Dry thoroughly with a clean kitchen towel or salad spinner to prevent ice crystals from forming.

Step 3: Flash Freeze (Optional)

1. Spread the basil leaves in a single layer on a baking sheet lined with parchment paper.
2. Freeze for 1-2 hours, then transfer the frozen leaves to a freezer-safe bag or container.
3. Label the bag with the date.

Storage Tips

• Use frozen basil within 6 months for optimal flavor.
• Great for soups, sauces, or casseroles where texture is less critical.

Method 2: Freezing Basil in Olive Oil

This method is ideal for preserving basil for pestos, pasta sauces, or marinades.

Step 1: Wash and Dry

• Follow the same washing and drying steps as above.

Step 2: Chop or Leave Whole

• Either chop the basil finely or leave the leaves whole, depending on your preference.

Step 3: Pack into Ice Cube Trays

1. Fill each compartment of an ice cube tray halfway with basil.
2. Pour olive oil over the basil to fill the compartments.
3. Place the tray in the freezer until the cubes are solid.

Step 4: Store the Cubes

• Transfer the frozen cubes to a labeled freezer-safe bag or container.

How to Use

• Drop a cube into soups, sauces, or sautéed dishes for instant flavor.

Method 3: Freezing Basil Puree

This is the best method for making pesto or sauces.

Step 1: Blend the Basil

1. Place washed and dried basil leaves in a food processor.
2. Add a small amount of olive oil (just enough to create a smooth paste).

Step 2: Freeze in Portions

1. Spoon the puree into ice cube trays or small freezer-safe containers.
2. Freeze until solid, then transfer to a labeled freezer bag or container.

How to Use

• Add frozen basil puree directly to your recipes or use it as a base for pesto.

Pro Tips for Freezing Basil

1. Prevent Oxidation: Blanching the basil leaves before freezing can help retain their green color. To blanch, dip the leaves in boiling water for 10-15 seconds, then immediately transfer to an ice bath. Pat dry before freezing.
2. Label Properly: Always label your freezer bags with the contents and freezing date.
3. Avoid Refreezing: Once thawed, use the basil immediately for the best flavor.

FAQs About Freezing Basil

Can you freeze fresh basil without oil?

Yes, but freezing with oil helps preserve the flavor better and prevents freezer burn.

Does freezing basil change its flavor?

The flavor remains mostly intact, though the texture changes, making it best suited for cooked dishes.

Can I make pesto before freezing?

Absolutely! Make pesto as usual, but leave out the cheese, which can be added after thawing. Freeze in small portions for convenience.