Wash the lovage and parsley, shake dry, pluck from the stems, chop and set aside separately, covered.
Cook the vegetables and potatoes in salted water until soft. In the meantime, slowly sweat the shallots with the lovage and butter in a pan until they start to brown.
Add to the drained vegetables and potatoes, mash everything to a puree and season with the spices. Stir in the weighed parsley before serving.