cilantro and basil freeze very well. After cutting the leaves, preferably in the early morning while they are freshest, we mix them with a small amount of olive oil... just enough to coat the leaves. They are then packed into freezer bags and frozen for later use. The olive oil makes it really easy to separate the frozen leaves and also adds an extra flavor to the mix.
Do you use your freezer to preserve herbs, vegetables, or fruit? The freezer can be a powerful, overlooked method of preserving. Pesto, strawberry puree, tomato soup — stash them away now for colder times! One of my favorite ingredients, a handful of fresh herbs from the garden, is one of the simplest things to preserve in the freezer, and I just learned a new, better way to freeze herbs: In oil!