I'm thinking for the next church potluck! A favorite Italian digestif, rich as custard and strong enough to knock you down. Everclear infused with plenty of lemon zest then swirled together with milk, sugar, and vanilla.
Good limoncello really needs at least a month for the lemon peel to sit in the alcohol and then another week for the lemon infused vodka to rest with the simple syrup. Use organic lemons since you're using the skin.