Although intense may be an exaggeration, this syrupy-sweet liqueur delivers assertive green-apple flavor. Its fun, and a vast improvement over certain other ersatz offerings for flavoring apple cocktails. Mix with vodka or gin. Dr. McGillicuddy's Wild Grape is the perfect balance of sweet fruit flavor with the right dash of sour to make it wildly intense. 42 proof The Doctor tastes great chilled, in mixed shots or simple mixed drinks. Dr. McGillicuddy's offers a great tasting, friendly buzz.