In all methods below, if the herbs you have are clean, there’s, obviously, no need to wash them again before preserving them, as some of there natural oils may be lost during the process. However, if the herbs are dusty or dirty, dip and gently swirl bundles of them in cold water to clean them. Shake off the excess water and then, before using, hang them until dry, or dry on a kitchen towel.
Freezing: Freezing herbs helps to preserve their vibrant colour. One method is to set herb sprigs in a single layer on parchment paper-lined sheet. Now freeze them solid, transfer to a freezer bag or container, and keep frozen. When you want to use some, take out what you need, chop or crumble it, and add to the dish you are making. ....