Watermelon Salad with Whipped Feta

Bahan-bahan (6 porsi)

• 5 to 6 cups diced seedless watermelon
• 3 Persian cucumbers, sliced
• quarter of a small red onion, very thinly sliced
• juice of 1 lemon (about 2 tablespoons)
• fine sea salt and freshly-ground black pepper
• 2 to 3 tablespoons finely-chopped fresh mint leaves
• 8 ounces feta cheese
• ½ cup plain Greek yogurt
• 2 tablespoons olive oil