The major reasons for the substandard fish sauce were low nitrogen readings and the ratio of glutamic acid to nitrogen either higher or lower than the required standards. Representative dishes Whereas many Thai dishes are now familiar in the West, the vast majority are not. In many of the dishes below, different kinds of protein, or combinations of protein, are interchangeable as the main ingredient. Beef (nuea), chicken (kai), pork (mu), duck (pet), tofu (taohu), fish (pla), prawns or shrimp (kung), crab (pu), shellfish (hoi), or egg (khai) can, for example, all be used as main ingredients for kaeng phet (red curry). Thus kaeng phet kai is red curry with chicken and kaeng phet mu is red curry made with pork. Breakfast dishes Khao chao (; lit. "morning rice/food"), breakfast dishes, for Thais are limited. Very often, a Thai breakfast can consist of the same dishes with rice which are also eaten for lunch or dinner. Single dishes such as fried rice, noodle soups, and steamed rice with something simple such as an omelette, fried/grilled pork or chicken, or a stir fry with vegetables, are commonly sold for breakfast from street stalls as a quick take-out. The following dishes are viewed as being specific breakfast dishes but they can also be found at any other moment of the day: Chok – a rice porridge commonly eaten in Thailand for breakfast. Similar to the rice congee eaten in other parts of Asia. Khao khai chiao – an omelet (khai chiao) with white rice, often eaten with a chili sauce and slices of cucumber. Khao tom – a Thai style rice soup, usually with pork, chicken, fish, or shrimp. Pathongko – The Thai version of the Chinese deep-fried bread called youtiao. It can be topped up with spreads such as sangkhaya or with chocolate and sweetened condensed milk. Nam taohu – Soy milk which is often served with sweet jellies. Individual dishes The term ahan chan diao (; lit., "single dish food") represents truly single-plate dishes as well as dishes that are served "rat khao" (lit., "poured on rice"): one or more dishes served together with rice on one plate. Some eateries offer a large selection of (pre-cooked) dishes; others specialize in only a one dish, or a few dishes, with rice. Phat kaphrao mu rat khao – minced pork fried with chilies, garlic, soy sauce and holy basil, served together with