Grilled Watermelon Salad
1 small red or yellow watermelon (3 to 4 pounds) , preferably seedless
1/4 cup extra-virgin olive oil , plus extra for brushing the melon
3 Tablespoons fresh lime juice ( about 2 limes)
Juice of 1 large navel orange
pinch of sea salt or kosher salt; or more to taste
pinch of cayenne pepper; or more to taste
1/4 cup chopped fresh mint
1/2 cup crumbled feta cheese, optional
Preheat a gas grill or build a charcoal fire for direct grilling. Cut the watermelon in half lengthwise, then cut each half in half. Cut these quarters into 2 inch thick slices. Brush the slices lightly with olive oil and set aside until ready to grill.
Combine lime and orange juices. Taste and if it's to tart add more orange juice. It should taste like a "sour" orange. Add the salt and cayenne and whisk continually while adding the oil in a thin stream. Whisk until thickened. Taste and adjust the oil and salt to your liking. Add the mint and set aside.
Just before serving, place the oiled watermelon slices on a very clean cooking grate directly over the heat source. Grill until marked and just warmed through but still crunchy, 2 to 3 minutes per side. Let cool. Cut off the rinds an discard. Cut the watermelon into chunks and place in a serving bowl. Pour the dressing over the top and toss gently. Top with feta, if desired, and sprinkle with another pinch of cayenne.