A Japanese Bowlful is a type of traditional Japanese dish that consists of a bowl of noodles, usually served with broth and various toppings. The three most common types of noodles used in a Japanese Bowlful are Ramen (5 letters), Udon (4 letters) and Soba (4 letters). Ramen is a wheat-based noodle, Udon is a thick, white noodle made from wheat flour, and Soba is a thin, buckwheat noodle. All three types of noodles can be served hot or cold, depending on the recipe.