• 8 cups:cubed seeded watermelon (about 6 pounds with the rind), divided
• 1 cup:water, divided
• 1/3 cup :sugar, divided
• 1/4 cup:fresh lime juice
• 1 liter (4 cups):club soda or seltzer water, well chilled
• Lime slices:for garnish

Preparation

1. Combine half the watermelon, half the water and half the sugar in a blender; puree.
2. Pour through a coarse strainer into a large container. Repeat with the remaining watermelon, water and sugar.
3. Stir in lime juice. Refrigerate until well chilled, about 4 hours.
4. To serve, stir in club soda (or seltzer) and garnish with lime.