For optimal flavor, use 2 tablespoons (2 g) of dried nettles per 1 cup (240 ml) of water. This concentration makes the tea robust enough to complement the ice and sparkling water. To prepare 4 servings, use 8 tablespoons (8 g) of dried nettles and 4 cups (960 ml) of water. Feel free to adjust the quantities slightly as dried nettles are very lightweight.