What is a "celtuce"?

Celtuce, also known as stem lettuce or Chinese lettuce, is a type of vegetable with long, thick stems and broad, leafy greens. The stems are crisp and juicy, similar to celery, while the leaves have a mild and slightly bitter flavor. Celtuce is commonly used in Chinese cuisine, where it is often stir-fried, steamed, or added to soups and salads. It is rich in vitamins and minerals, particularly vitamin C and potassium, making it a nutritious addition to meals.