Fratres!
Lovage-Ligusticum levisticum , native to the med but cultivated in Britain and the americas.The plant is used for root and rhizome, though the leaves were always used as a salad (with lettuce) , we know that phthalides are present and some coumarins. As a medicine it is a sedative, anti spasmodic and antimicrobial. Its 'everyday" use would be asa good mouthwash when suffering a throat infection ,ulceration or infected gums.Fortunately not an anaphrodisiac like Lettuce.In the past the stalks were eaten like celery.
Ill have a look at Pliny and see what the great man tells us-and by the way Lovage was often used to flavour beer ( like cowslip herb-"Freya's key"). Though Yarrow displaced it in later Medieval times as a flavouring.
There are several sub species-the American variety is used more as a cough medicine.
Pantagathus do you have any American beers with these flavourings?