Ingredients

1/4 cup sugar 

1/4 cup lightly packed tarragon sprigs, plus more for serving 

6 cups peeled, chopped honeydew melon 

1/3 cup fresh lemon juice 

Floral gin, such as Hendrick's (optional) 

Preparation

In a small heatproof bowl, pour 1/2 cup boiling water over sugar and tarragon; stir until sugar has dissolved. Let cool completely, about 20 minutes. Strain syrup into a blender; discard tarragon.

Add honeydew, lemon juice, and 1 3/4 cups cold water; blend until smooth. Strain through a fine-mesh sieve.

Serve over ice, garnished with a tarragon sprig, or refrigerate in an airtight container up to 3 days. If using gin, stir a shot (1-ounce) into each glass before serving.