Herb Oil Based Concentrate
From Self-sufficiency
If you're making pesto this year, buy a few extra pounds of basil and try this. This process produces a concentrate that can be used in place of fresh herbs in many recipes.
2 cups clean, hard packed leaves of your favorite fresh herb 1/2 cup of your favorite oil
Combine the leaves and oil in a food processor, and chop until they form a paste.
Freeze the paste until it is needed for a recipe. Ice cube trays provide an ideal sized cube of concentrate, but they're messy to clean afterwards.
Once the cubes have frozen, transfer them to a zip lock bag for storage.
Another method for freezing and storage is to put the concentrate into small plastic containers.
The oil coats everything, and helps protect the herbs from freezer burn.