Romeo and Juliet!
Muddle cucumber and pinch of salt. Slap the mint. Add rest of ingredients. Let sit for 30 seconds (time allowing). Shake. Strain. Garnish with 1 floating mint leaf and 1 drop rose water on top of leaf, and 3-5 more drops of angostura on the surface of the drink.
I know most of you don't keep rose water handy but this is a great summer time drink!