Look for lemongrass in the herb section of your supermarket. Lemongrass can be sold in long stalks that you chop yourself, short stocks in a plastic container, or as a jarred or bottled paste.

Look for lemongrass that is firm and pale yellow-green with a bit of a bulb at the end. The top of the stalk should look relatively fresh; they tend to dry out quickly so they may not look like they were just harvested but they shouldn't be browned or sad looking.