Using a muddler or the handle of a wooden spoon, mash two 1/2" lime wedges, two 1/2" rounds of cucumber, 1 fresh hulled strawberry and 1/2 tsp. strawberry balsamic vinegar in a 16-oz. mixing glass or a cocktail shaker 4–5 times just to release juices and oils.
Add 1/4 cup your favorite gin or vodka.
Transfer to an Old Fashioned glass.
Fill halfway with crushed ice, stir, then mound more crushed ice on top. Garnish with a cucumber round.