I have never attempted this soup before but now that I’ve made it, it’s on our dinner list. Spicy and comforting, this soup is full of flavor and yet clean and light. Nerdy Tips Every article I read on making pho suggests using Red Boat Fish Sauce. Charring the ginger and onions will give this soup an authentic flavor. Many people enjoy a splash of Sriracha in their pho. Nerdy Facts Pho is mainly served for breakfast in Vietnam. Pho was influenced by both French and Chinese cuisine. It made its first appearance in the late 1800s. Pho is pronounced “fuh”