How to Make It
Divide blueberries and basil evenly among 4 lowball glasses. Add 1 teaspoon sugar and 1 lemon wedge to each glass. Use the handle of a wooden spoon to muddle ingredients.
Add 1 ounce gin and ½ ounce St-Germain to each glass. Divide kombucha evenly among glasses. Add ice and garnish with additional fresh basil, if desired.