Make a proper Italian feast and set a place for them. It doesn’t matter if it’s modern Italian dishes they never would have eaten – it just has to be Italian. Listen to Italian music or watch an Italian movie or play Italian games. Eat, drink, dance and have a good time with them. When you are finished, perform divination to see if there’s anything further they would like.
Alternately you may offer them some of your blood, since they shed their blood in defense of the Bacchic mysteries. Ask them to drink deep and draw nourishment from you, as you drink in their ecstasy and are fed by their experiences and example.