4 garden-grown or hot house tomatoes, chopped (you need very fresh, flavorful tomatoes since they are the main ingredient and not cooked)
1 small red onion, diced
½ teaspoon basil
½ teaspoon salt
2 teaspoons vinegar
3 to 4 tablespoons olive oil, depending on the size of the tomatoes
Mix all ingredients together and let stand at room temperature for ½ hour to allow flavors to blend.