Celtuce grows and tastes like romaine lettuce and can be used the same way. However, when it starts maturing it will send up a seed stalk that is normally associated with bolting. Unlike lettuce, with celtuce, the crunchy spring vegetable is the bolting stalk. Use chopped up as a stir fry vegetable, fresh as one would celery, or even pickled. Found throughout Asia and soon to be gaining popularity in North America.