Cilantro

Refrigeration: Fresh cilantro leaves can be kept in the refrigerator for up to a week; place the stems in water and put a plastic bag over the leaves to retain the aroma. Leaves lose their flavor and aroma when dried or frozen; so used them fresh.

Drying: Dry coriander seeds thoroughly before using. The aroma of coriander seeds changes from unpleasant to savory as it dries. Seeds are usually scalded in hot water to protect them from insects, but hot water-treated seeds cannot be planted later. Cilantro leaves can be dried on a screen in a dark, cool, well-ventilated place.

Freezing: The flavor of cilantro leaves disappears when dried or frozen.

Storing: Cilantro leaves are best used fresh but can be dried and stored in an airtight container. To preserve leaves, make cilantro butter, oil, or vinegar (use white wine vinegar). Dried seeds can be stored for several months in an airtight container. Scald seeds before you store them to protect against insect damage in storage.