Pho Chay refers to vegetarian Pho or a meatless Vietnamese soup or noodle dish. Pho is the well-known Vietnamese rice noodle dish. The authentic version has its broth made using beef or chicken bones, then served together with various kinds of beef or chicken meats. The noodle dish is essentially a meat-based dish. In the words of Asian cookbook author Corinne Trang, pho is really two separate dishes in one: the broth, and the noodle with its ingredients. It would take good skills and experience to create imitation pho, which is exactly what vegetarian pho is. A real and completely vegetarian pho is made entirely from vegetables. Instead of using meats and bones, the broth depends entirely on vegetable ingredients such as leeks, wheat gluten (mock beef, chicken, etc.,) tofu and mushrooms for flavors and textures. Important pho ingredients are definitely retained to keep the pho flavors, and as long as they are not meat-based. These include onion, star anise, cinnamon, ginger, cloves, and the likes. Vegan or not, pho would not be pho without these ingredients to give pho its unique aroma.