- Vegetable oil, for grilling
- 3 tbsp. granulated sugar
- 1 1/2 tsp. kosher salt
- Zest of one lime
- 1/4 large watermelon (about 5 lbs), cut into 1-inch thick wedges
- Fresh cilantro and lime wedges for serving
- Heat a gas or charcoal grill to high heat (about 450˚ to 500˚) and oil the grill grates with vegetable oil.
- In a small bowl, stir together the sugar, salt, and lime zest. Pinch the mixture together with your fingertips to combine all of the ingredients.
- Lay the watermelon wedges in a single layer on a sheet tray. Reserve 1 teaspoon of the salt mixture; set aside. Sprinkle half of the remaining salt mixture all over the watermelon wedges. Flip and sprinkle the wedges with the other half of the salt mixture. Place on a cooling rack set over a sheet tray and let rest for 15 minutes. Using paper towels, press firmly on the slices to remove excess moisture.
- Place the wedges on the grill over direct heat and cook for 2 to 3 minutes on each side, until grill marks appear. Remove the watermelon from the grill and place on a sheet tray or serving platter. Sprinkle with the reserved salt mixture and cilantro. Serve with lime wedges, if desired.