Dr. Mcgillicuddys Wild Grape Liqueur 1 LDr. Mcgillicuddy Was As Gentleman Like As They Come But Rumor Has It That He Was Once A Wilder Man. His Rowdy Self Runs Rampant In This Spirit Which Is Delightfully Tart In An Untamed Way. Italian producers Marolo use the Arneis grape to produce this light, elegant and floral Grappa. Arneis grapes are notoriously tricky to grown, hence their name in Piedmontese, it means 'little rascal', which is both pretty cool and adorable.