Lemongrass, also called citronella or sereh, is native to Asia and a staple in Thai cuisine.

Highly aromatic, lemongrass has long, thin, gray-green leaves and a fleshy scallion-like base.

The sour-lemon flavor and fragrance of lemongrass can be attributed to citral.
 

Store fresh lemongrass in the crisper of the refrigerator for up to one week. Dried lemongrass can be stored in a cool, dry place, away from sunlight for up to six months.