Black Pepper, Olive Oil, Cherry Tomatoes, Red Onion, Ears Of Corn, Red Wine Vinegar, Basil Leaves. This Tomato Corn Salad with Onions is a colorful summer side dish bursting with fresh flavors. Grilled corn kernels, sweet cherry tomatoes, and thinly sliced red onion are dressed with olive oil and red wine vinegar and topped with fresh basil leaves. It's a nutritious and tasty salad that's ideal for picnics, barbecues, or any summer meal.