In a cocktail shaker or glass jar with a lid, combine 3 cherry tomatoes with the teaspoon of balsamic and add the basil leaves. Use the back of a spoon to crush the mixture until the cloudy tomato-water is pressed out. Add 2 oz. of cucumber vodka or gin and ice cubes. Cover and shake vigorously. Wet the rim of your martini or cocktail glass and dip it in the salt-pepper mixture, dusting HALF the rim.