Lemongrass sticks, commonly used in cooking and incense, are derived from the lemongrass plant, scientifically known as Cymbopogon citratus. These sticks, often used fresh or dried, impart a lemony, citrusy, and slightly woody aroma and flavor. In cooking, they are a staple in Southeast Asian cuisine, particularly in Thai and Vietnamese dishes. They are also used in incense, where the aroma is known for its uplifting and invigorating qualities.