Pe-tsai is a Chinese cabbage that is commonly used in Asian cuisine. It is known for its tender, sweet, and delicate leaves that are perfect for stir-fry dishes, soups, and salads. While pe-tsai is its most popular name, it is also known as bok choy, Pak choi, and Chinese white cabbage. Bok choy is the Cantonese name for pe-tsai. Pak choi is a Mandarin term for the plant that is commonly used in Chinese dialects. Chinese white cabbage is another name that is mostly used in the west to describe this leafy vegetable. No matter what you call it, this healthy and nutrient-packed vegetable is a delicious addition to any meal.