Watermelon Cucumber Basil Seltzer
To make ahead: The fruit concentrate will keep, covered, in the refrigerator for up to 3 days. The syrup will keep, covered, in the fridge for up to 1 week.
Tip: Create additional seltzer flavors using these combinations for the fruit concentrate.
Cranberry Orange Ginger: 1/2 cup cranberries, fresh or frozen (thawed) 1/2 orange, sliced 1 tsp. sliced fresh ginger
Pineapple Lemon Ginger: 1 cup chopped pineapple, fresh or frozen (thawed) 1/2 lemon, sliced 1 tsp. sliced fresh ginger