Slice 1/3 of cucumber and add into large sealed jar (think a mason jar). Add a handful of fresh basil leaves (about half of store package). Pour in gin. You're done until tomorrow.

To make your cocktail:

Add all ingredients to a martini shaker filled with ice. Shake and pour into a martini glass or an old-fashioned glass. Garnish with a slice of cucumber. Walk outside in the warmth, sit down, and enjoy.