The Thais‘ love affair with noodles began right around World War II. The Chinese immigrants had brought noodles with them. But the noodles were made popular by a government propaganda. Because rice noodles are made from broken rice, by product of milling, they are economical to make. Especially during the war, things were expensive and hard to come by. The Thai prime minister promoted noodles as time saving and money saving meal, perfect for lunch. Otherwise, a full Thai meal required heavy investments both in time and materials. The effect has lasted until today, you will see that noodles are popular for lunch but not dinner.