Rebujito with watermelon

Ingredients:

• 1 watermelon
• 90 ml fino sherry
• 30 ml lemon juice
• 30 ml simple sugar syrup
• 30 ml of cava

Preparation:

1. Cut the watermelon flesh into ice cube-sized pieces and freeze on a waxed paper-lined baking sheet for about 2 hours.
2. Combine sherry, lemon juice, syrup, and ice in a cocktail shaker. Place 3-5 watermelon cubes in a Collins glass (reserve the remaining watermelon cubes for another time). Strain the cocktail over the cubes. Top with cava.