This is the perfect salad for a hot summer night: it’s quick, easy and full of flavor, combining sweet tomatoes with spicy horseradish and cooling buttermilk. Slideshow: Summer Salads
In a small bowl, whisk the mayonnaise with the buttermilk and horseradish and season with salt and pepper. Arrange the tomatoes on plates and top with the scallions. Drizzle the dressing all around and serve right away.