1st: there is no cola in this drink, that's just a bottle I use to store syrup. 2nd: this drink is damn tasty. Came up with the idea and then googled a bit to see if it was completely out of left field. I found similar but not identical drinks so I want ahead and tried it out, and I like it. I'm going to tinker around with the proportions a bit but it's already very tasty.
6 drops Bittermens Hopped Grapefruit Bitters
1 dash Angostura Orange Bitters
1 spoon rich Turbinado Syrup
Mix ingredients in ice filled shaker or mixing glass. Stir well, it needs a little dilution. Strain into chilled glass, I added a big ice cube and expressed and garnished with an orange zest twist.