Lemongrass is a true grass that grows in the tropics, hailing from the family Poaceae. Closely related to citronella, it releases a nice, lemony scent when crushed.
The clump-forming grass grows between 2 and 4 feet tall, with tall, thin leaves that drape back down to the ground, which is why it also makes a lovely ornamental grass in gardens.
While some kinds of lemongrass grow well in parts of Australia, Africa, and the Caribbean, lemongrass is native to India, Burma, Thailand, Malaysia, and Sri Lanka.
Lemongrass has a lemony scent when crushed and a lemon tinge to its taste as well. However, it's not as sour as lemon and is often described as floral and slightly sweet.
Most grocery stores will have lemongrass. Just look for the greenish-white stalks, which can also have a yellow tinge, in the produce department next to other herbs.
You can also visit an Asian foods store or an import store along with stores that cater to African and Caribbean cooking. You may also find it in the freezer section.
Look for fresh, firm, moist, and fleshy-looking stalks, and avoid bruised or squishy ones. When looking for dried lemongrass, check the expiration date.
For fresh lemongrass, if the papery leaves on the outside look dry, peel them back to see if the stalk inside looks brighter and fresher. Brown and dried-out leaves are a bad sign.