Salted Spicy Watermelon Margarita Popsicles

Name: Salted Spicy Watermelon Margarita Popsicles
Prep time: 10 min
Total time: 10 min
Cuisine: American, Mexican, Latin American
Ingredients: 4 cups cubed watermelon; 1 jalapeño, halved and seeded, if desired ((optional)); 2-6 tablespoons granulated sugar, using more or less to your taste; 1/3 cup, plus 1 tablespoon tequila; 2 tablespoon Cointreau (orange liquor) ((orange liquor)); 1/2 cup, plus 2 tablespoons lime juice, plus 1 tablespoon lime zest; 4 kiwi, peeled and chopped; 2 Persian cucumbers, peeled and chopped; flaky sea salt, for sprinkling