Ingredients
2 cups blackberries or black raspberries, plus more for serving
1/4 cup fresh lime juice (from 2 limes), plus lime wedges for serving
8 ounces vodka, chilled
1/3 cup superfine sugar
1/2 teaspoon fresh marjoram leaves, plus more for serving
Ice cubes, for serving
16 ounces seltzer or club soda, chilled
Preparation
Puree blackberries, lime juice, vodka, sugar, and marjoram in a blender. Strain through a fine-mesh sieve, pressing on solids with a flexible spatula; discard solids. Puree can be made ahead and refrigerated in an airtight container up to 2 days.
Divide puree among 8 ice-filled glasses. Fill with seltzer; stir. Serve, garnished with blackberries, lime wedges, and marjoram.
