For the filling cook the beans with the water till tender. Use a mixer to make a paste. Put back in pot and add the rest of the ingredients. Cook until its a firm paste. Divide in 16 parts end cover.

Mix dry ingredients for the mochi paste and add water. (Add a bit of food coloring if you want) Then steam until is cooked. The color changes from withe to super light brown.

Pound the mochi 100 times in the bowl. Add the starch to a surface and put al the mochi there. Cut in 16 parts and cover with film.

Put starch in your hands. Be aware that this is super sticky, that's why you need to put starch in your hands. Fill the mochi with the azuki paste.