To make Mixed Berry Mocktails: Place 1 cup berries in pitcher. Muddle with back of wooden spoon. Add 1 1/2 cups of the sugar mixture, 1 cup lemon juice, 3 cups cold water, remaining berries and lemon slices. Refrigerate 30 minutes to chill. To serve, fill 8 glasses half full with berry mixture. Add ice and sparkling water to fill glasses.