Japanese bread will generally use a higher protein content of flour to make, and then add butter sugar, milk and other materials that can make it more moist and soft to make the bread is very fluffy and soft, and then add a rich and delicious fillings, so that its taste is more full.
Japanese bread most of the exquisite small mainly due to rich fillings, dough inside the fat and butter content is also higher, so the volume is generally not too big, most of them are about 50g mainly.