Gastronomic use Medicinal use It is fully demonstrated the effectiveness of the essential oil of Cymbopogon citratus against the bacterium Helicobacter pylori. Citronellol is an essential oil constituent from Cymbopogon citratus. Citronellol has been shown to lower blood pressure. Cucumber lemongrass flavored water Ingredients: 1/2 cucumber 1 stalk lemongrass 4 cups of water Ice ice Directions: Wash the cucumber. Using a vegetable peeler remove some of the waxy peel from the cucumber. Proceed to peel the cucumber into ribbons using the vegetable peeler. Put the ribbons into the pitcher. Using your hands, peel away the rough outer edge of the lemongrass. Cut the lemongrass in half, lengthwise. Place the lemongrass onto a cutting board. Using a rolling pin, gently smash the lemongrass. Add to the pitcher of ice and cucumber ribbons. Fill with water. Give a stir. Let chill in the fridge at least an hour. Fill about 1/4 of the pitcher with ice, stir, and enjoy. Lemon grass leaves may be used green or dried to make a delicious tea. Lemon grass is mainly used in is a popular culinary herb in Asian cuisine and used to add lemony flavor to soups, stews, curries and vegetable and rice dishes.