In shaker, gently muddle 3 slices of cucumber, 3 sprigs of mint, and a pinch of salt. Add 2 Dry Gin, 0.75 Lime Juice, 0.75 Simple Syrup, 3 drops rose water, 3 drops Angostura. Shake. Pour. Garnish with a floating mint leaf with a single drop of rose water beaded on it, and two drops of angostura on the surface. [From Violet Hour in Chicago. Very unique. Salty, green. Could be a nice smoothie or agua fresca.]