Lovage is generally cultivated as a sweet herb or food. Its' scent and flavor reminds me of its similarities with Celery but with out the strings found in the Celery. Lovage is a long-stemmed vegetable with long crisp flattish leaf stalks that are eaten raw or cooked as a vegetable flavor and smell is somewhat similar to celery. They make great compaion plants with Asparagus. Just plant in between your Asparagus.
The root of Lovage is dug up at the end of the season and used as a vegetable or grated for use in salads. The leaves can be used in salads or soup. Or make a season broths, and the roots can be eaten as a vegetable or grated for use in salads. The seeds can be used as a spice, similar to fennel seeds.
Tea: dry the leaves and enjoy a delicious hot or cold tea.