Best Melon, Mango, and Avocado Salad

1 small red onion, very thinly sliced

2 tablespoons red wine vinegar

½ cup freshly squeezed orange juice

1 tablespoon grated orange zest

2 teaspoons extra-virgin olive oil

¼ teaspoon kosher salt

freshly ground black pepper

2 cups small cantaloupe balls

2 cups 1/2-inch diced seedless watermelon

1 ripe mango, cut into 1/4-inch dice

1 cup loosely packed cilantro leaves

1 ripe Hass avocados

1 tablespoon fresh lime juice

6 thin lime slices

To make pickled onions, combine the thinly sliced red onion and the red wine vinegar in a small bowl. Cover; chill for at least one hour.

Pour the orange juice into a large salad bowl. Whisk in the olive oil and orange zest; season with 1/4 teaspoon salt, and a pinch of black pepper. Toss the cantaloupe, watermelon, and mango in the dressing. Just before serving, stir in the pickled onions and cilantro leaves.

Cut the avocados into 1/2 inch dice; place in a small bowl. Sprinkle with the lime juice, and season with the remaining 1/4 teaspoon salt. Stir lightly to combine. Spoon an even amount of avocado into the bottom of 6 large martini or wine glasses. Top avocado with melon salad; garnish each salad with a lime slice.