Here's a fun Tiki-style drink I just came up with. It has two back-stories:

1. When I discovered the Puerto Rican molasses soda, Malta India, I decided it was amazing and that it must be mixed with rum and lime. I guess I went a little byzantine with it, but I’m happy with the results. The soda can be purchased at an excellent restaurant in San Rafael called Sol Food.

2. I once tried to explain infinity to my four-year-old son. Something along the lines of, "Well, it's bigger than all the numbers. Bigger than a million, bigger than a billion. In fact, you can never reach it, it's so big." To which he mused after some thought, "That's crazy." And I said, "Yes. Yes, it is." And then he said, "Dad, you know what? Infinity is a SHARK!" To which I replied, "Well, since it's a hypothetical number, then yes, it's as much a shark as anything else, son. So, you're right, in a way."

Infinity Is A Shark
1 oz Smith & Cross Jamaican rum
1 oz Lemon Hart 151 Demerara rum
½ oz Tuaca
½ oz Marie Brizard white crème de cacao
⅓ oz allspice dram
1 oz lime juice
2 oz Malta India molasses soda

Shake all but the soda and strain into a crushed ice-filled tiki mug or highball glass. Top with the soda and garnish with a mint sprig.