Keep fresh herbs in the refrigerator. If they are dirty or sand, rinse them gently just before using them. Wrapped in a paper towel and placed in a plastic bag, herbs stay fresh for several days. Those that still have their roots can be kept longer, place them in fresh water at room temperature, like cut flowers. You can also wrap the roots in a damp cloth and store the herbs in a plastic bag in the warmest part of your refrigerator.
You can freeze them whole or chopped, without blanching; if you wash them, be sure to dry them thoroughly.

Storing Exotic Basil

Keep fresh basil in the refrigerator. Wrap it in slightly damp paper towel to help it stay fresh longer. Wash it just before using it. Fresh basil leaves can also be preserved in olive oil, or you can make them into a smooth paste by mixing them with oil in a blender or food processor. Store dried basil in a sealed container kept in a cool, dry, dark place.
Freezing is particular suitable for basil, which loses much of its taste when dried. Freeze it whole or chopped; blanching is unnecessary. You can also cover it with stock or water and freeze it into cubes, which can be used in soups, sauces and stews. Use it unthawed to maximize its flavor.

Storing Exotic Lemon Grass

Keep fresh lemon grass in the refrigerator. Wrap it in slightly damp paper towel to help it stay fresh longer. Wash it just before using it.
Freeze it whole or chopped; blanching is unnecessary.

Storing Exotic Fresh Mint

Fresh mint can be kept for several days in the refrigerator. If stored in a sealed container kept in dry, dark place, dried mint remains flavorful for up to 2 years.

Storing Exotic Sage

Dried sage can be kept for up to a year with little loss of flavor.