Boil red bean, throw boiling water away as soon as water boil
Add cold water and keep simmering until soft
Add sweetener and keep simmering until water is almost gone
Blend all of the dough ingredients except matcha
Knead well (put some flour on table surface to prevent stick)
Divide dough into two and add matcha powder into one of it
Wait for it to ferment until double its size (around an hour)
Divide both of the dough into two pieces (get 2 white 2 green dough) and roll out
Place one white dough at the bottom, then red bean, then one green dough, then red bean, then one white dough, then one green dough
Cut dough into 6-8 pieces and slash two lines then braid the dough
Ferment again until almost double its size
Bake at 180c or 350F for 20mins
