Vietnamese food, the good stuff, is often very spicy Vietnamese food can take more time to prepare. some examples of long prepared meals are bo kho, pho (yah its thrown together when u order it but the soup is cooked for a long long time), and those banana leaf wrapped foods.
Pho Soup…I personally find that Vietnamese food has a lot of impact in terms of flavour. i think there is some sophistication in its flavour but its prominent quality is the intensity of the flavour. For example, fish sauce and fermented shrimp paste are very salty and pungent.