Green Vigorous

The food you're referring to is likely kale, often referred to as a "green vigorous" vegetable in restaurants across the USA. Kale is a type of leafy green vegetable that belongs to the Brassica family, which also includes vegetables like broccoli, cauliflower, and brussels sprouts.

Kale is known for its dark green, curly leaves and its high nutritional value. It is a rich source of vitamins A, K, and C, as well as minerals like calcium and iron. Kale is also high in antioxidants and has been linked to various health benefits, such as reduced inflammation, improved heart health, and cancer prevention.

Kale can be prepared in a variety of ways, including sautéing, steaming, or roasting. It is often used as a base for salads, added to smoothies, or baked into kale chips. Kale is a popular ingredient in many restaurants, where it is used to add flavor, texture, and nutritional value to dishes.