6 cups cubed seeded watermelon, divided
1/4 cup mint leaves, divided
1/4 cup fresh lemon juice
1 cucumber, peeled, sliced, and divided (leave a few rounds w/ skins on for a garnish)
2 1/2 cups tonic water, chilled
1 1/4 cups gin
1. Combine half each of the watermelon, mint, juice, and cucmber in a blender until smooth. Strain into a bowl. Discard solids and repeat for the other half.
2. Combine 2 1/2 cups of the juice mixture with the tonic water, and gin. Stir well to combine.
3. Serve over ice. Garnich with watermelon and cucumber wheels.