Jumbo Lump Crab Salad With Seared Watermelon

Ingredients

• 1/4 cup chopped pineapple
• 1/2 bunch cilantro
• 1 cup extra-virgin olive oil
• 1/4 cup rice-wine vinegar
• 1/4 cup orange juice
• juice of 1 lime
• 1 avocado, peeled and pitted
• 2 tablespoons greek yogurt
• 1/2 teaspoon cayenne
• 1/2 teaspoon salt
• 1 tablespoon cayenne
• 1 1/2 tablespoon sugar
• 1 1/2 tablespoon salt, plus more to taste
• 1 tablespoon olive oil
• one 4-ounce piece seedless watermelon, cut into a rectangle
• 4 ounces jumbo lump crab
• 4 sprigs cilantro, for garnish
• pepper, to taste
• 4 baby heirloom tomatoes, halved