The entire plant is edible, from root to tip, and it has a bright, fresh flavour that tastes a bit like citrusy celery.
Lovage tastes like celery, but is a bit sweeter with a stronger flavor. It has hints of anise and parsley, too. The leaves are a bit milder than the stems. The leaves can be chopped up and added to any dish you would use celery in including salads, soups, stews, frittatas, egg salad, and potato salad. The flavour is stronger than celery, so use it accordingly.