Spicy Jalapeño Watermelon Margaritas

Bahan-bahan (3 porsi)

• 2 cups fresh watermelon juice (**see instructions below**)
• 1/2 cup fresh lime juice
• 1/2 cup tequila
• 1/4 cup Triple Sec (or any orange liqueur)
• thin slices of fresh jalapeño
• garnish: salt or sugar to rim the glasses, frozen watermelon cubes, lime slices