Triple sec seems a promising addition addition. Must try. Favorite of mine: In a frozen glass. Old fahsioned or larger. Two small scoops Häagen-Dazs vanilla bean (or other authentic no emulsifer ice cream). Half fill two to one white grapefruit /Pom pomegranite juice, splash of lime. Top with tonic water. Careful it foams like a rootbeer float. Also any bitters you might be inclined to add. Plus vary the juices. Apple. Orange. Good with booze in it also.