Romaine lettuce is a type of leafy green vegetable known for its long, crisp leaves and sturdy texture. It is a popular ingredient in salads, particularly in the classic Caesar salad, and is often used in sandwiches and wraps. Romaine is rich in vitamins A, C, and K, making it a nutritious choice for a healthy diet. This lettuce variety thrives in cooler climates and is typically harvested in the spring and fall. Romaine can be found in grocery stores year-round, and it is usually sold either whole or pre-packaged in bags. Its crunchy leaves add a refreshing element to various dishes.