Flat beans, also known as Romano beans or Italian green beans, are a variety of bean that grow in a wide, flat pod rather than the more common round, cylindrical shape. Originating in the Mediterranean region, flat beans have been a staple ingredient in Italian, Spanish, and other southern European cuisines for centuries.
Flat beans are typically 4-6 inches long and 1-2 inches wide, with a slightly bumpy, fibrous texture. The pods contain small, tender beans that range in color from bright green to pale yellow. When young and fresh, flat beans have a delicate, slightly sweet flavor and crisp, snappy texture. As they mature, the beans become more starchy and the pods toughen.
In cooking, flat beans are most commonly used in their immature, green state. They are often sautéed, steamed, or boiled and served as a simple side dish, frequently seasoned with garlic, olive oil, and herbs. Flat beans also make an excellent addition to stews, braises, and pasta dishes, where their robust texture and flavor can stand up to longer cooking times.
Culturally, flat beans are strongly associated with Mediterranean cuisines. In Italy, they are a common ingredient in classic dishes like minestrone soup and pasta e fagioli. In Spain, they are often found in tapas plates, stews like fabada, and the famous Valencian dish of paella. Flat beans are also widely used in Greek, Provençal French, and Moroccan cooking.
While the classic green variety is the most common, there are also yellow and purple-podded cultivars of flat beans. These offer slightly different flavor profiles, from the nutty sweetness of yellow beans to the earthy, almost beety taste of purple ones. Specialty markets and well-stocked grocery stores may carry these unique color variations.
When selecting flat beans, look for pods that are bright in color, free of blemishes, and snap easily when bent. Avoid any that are limp, wilted, or have visible signs of age. Properly stored in the refrigerator, fresh flat beans will keep for 3-5 days. For longer-term preservation, they can be frozen, canned, or dried.
In the kitchen, flat beans can be prepared in a variety of ways. They can be steamed, sautéed, or boiled until tender-crisp. Longer cooking will yield a softer, more creamy texture. Flat beans also hold up well to roasting, grilling, or even pickling. Their robust flavor makes them a suitable ingredient for stews, casseroles, and pasta dishes. They pair excellently with Mediterranean flavors like tomatoes, olives, garlic, and herbs.