Vietnamese food is varied, distinctive and, because it is comparatively low fat and high in carbohydrate, generally healthy. Traditionally, cooking was done over a fire, so preparation is by boiling, steaming, barbequing and frying, not roasting or baking.
Looking for a quick lunch of soup, salad or a sandwich? Maybe you ought to think Vietnamese. Perhaps an exquisite vegetarian meal? Well, then, why not think Vietnamese? Or is tonight time for multiple dishes, contrasting flavors, varied textures and exotic ingredients? Once again, it's a good time to think Vietnamese. Or perhaps something healthy and "lite?" Guess what: think Vietnamese.
Street food and street vendors are the own culture of the Vietnamese community. They reflect the lifestyle and the process of society and eventually become a habit for Vietnamese people in general.