Chashu ramen is a Japanese dish that consists of ramen noodles served with chashu, which is a type of pork belly that has been slow-braised in a sweet and savory sauce. Chashu is typically rolled into a log shape with butchers twine to keep the pork moist and to allow it to absorb flavors. However, some ramen shops serve slices of non-rolled chashu as well. Chashu is a popular ramen topping in Japan and is often served with other toppings such as soft-boiled marinated ramen egg (ajitsuke tamago) . Chashu can also be eaten as a main dish with rice or used as an ingredient in other dishes such as yakimeshi Japanese fried rice or chashu donburi (bed of steamed plain rice topped with chashu) .