Persian Tomato and Cucumber Salad (Shirazi Salad)

Ripe summer tomatoes shine in this simple salad inspired by a recipe from Najmieh Batmanglij’s book “Cooking in Iran.” To make the dish out of season, try Campari tomatoes (sometimes called cocktail tomatoes), which have a better texture than other varieties in the off seasons. English cucumbers have fewer seeds and thinner skins than the typical garden variety. Even better are smaller Persian cucumbers. If you find them, you'll need 12 ounces. And simply slice them into ½-inch rounds; no need for seeding. The dressing is bracingly fresh and sharp; if you prefer a mellower, slightly richer salad, drizzle in the optional olive oil just before serving.