3 pounds seedless watermelon, cut into 1-inch cubes (about 5 to 6 cups)
2 pounds cantaloupe, cut into 1-inch cubes (about 3 to 4 cups)
2 pounds honeydew melon, cut into 1-inch cubes (about 3 to 4 cups)
2 tablespoons coarsely chopped fresh mint leaves
1 tablespoon freshly squeezed lime juice, plus more as needed
1 tablespoon granulated sugar, plus more as needed
Pinch kosher salt
Place all of the ingredients in a large bowl and gently mix to combine.
Taste and add more lime juice or sugar as needed. Serve immediately or
chill in the refrigerator for up to 4 hours before serving.