Lemongrass is one of the most important herbs of Thai, Vietnamese and Indonesian cuisine. Hand No 1. Lemon Grass Powder is composed of finely chopped, scaly green plant parts and has a fresh lemony flavor. Hand No 1. Lemon Grass Powder in convenient glass diffuser is perfect for seasoning Asian dishes. Enrich your soups (tom yum, tom ka, Singapore laksa), curry pastes (e.g. green curry) and sauces (e.g. peanut sauce) using lemongrass powder and give your dishes a fresh lemony bite.