In Central Thailand, nam tok is mainly a spicy soup stock enriched with raw cow blood or pig’s blood. Blood is often used in Thailand to enrich regular noodle dishes. One of the most popular variants of the nam tok noodle soup is known as kuai-tiao mu nam tok. It includes broth, blood, noodles, bean sprouts, pieces of liver, pork, dumplings, green vegetables and spices. This type of soup has an intense, rich and pleasant taste and is often served by streetside vendors in small food stalls. Thailannd best seller noodle. ingredients: Sugar, Salt, Spices, Soy Bean Sauce.