Lemon Grass

grass native of India and Sri Lanka that produces lemon-scented perfumed oil

Cymbopogon is a genus of about 55 species of grasses, native to warm temperate and tropical regions of the Old World and Oceania. It is a tall perennial grass. Common names include lemon grass, lemongrass, barbed wire grass, silky heads, citronella grass or fever grass amongst many others.
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Known as sereh (or serai Indonesian and Malaysian), takrai (Thai), xa (Vietnamese). Thick, rough pale green stalks with a citrus flavor and scent. To prepare for cooking, cut off and discard the tough root end and green grass top. Use only the tender inner white portion. You can substitute an equal amount of grated lemon zest moistened with a bit of fresh lemon juice.