Chop off the woody top of the lemongrass stalk (but don’t throw away!), then peel away the outer layers of the lemongrass stalk until you’re left with the creamy light green center, which smells like heaven. Finely chop just the white and very light-colored part, about the bottom one-third of each stalk. All the stuff you peeled away? Throw it into your tea with your teabag.