It is a very common type of restaurant in Vietnam where you walk in, sit down and they put a plate of food in front of you. Staff spoke no English but using some phrases that we previously had translated for us, the owner said there was no egg, milk, or meat (including fish sauce). Food consisted of some rice with vegetables and a lot of different types of fake meat. Everything but the rice was cold but for 75 cents USD a plate you can't really beat it. The fake meat seemed to be the same stuff sold a grocery stores which is all labelled vegan so we were confident the meal was vegan. Food had obviously been sitting out all day but this is pretty typical of these types of restaurants.