Follow all these directions in order without missing out on any in between:
Get all the ingredients in one place. In a big bowl, combine the flour, sugar, salt, and yeast
Give the dry ingredients a little mix and set aside
In a separate bowl, beat the egg
Now, add the beaten egg to the dry ingredients
At this point, add in the water and milk too
Now, use your hands to incorporate this mixture, mix until all ingredients are well combined
The dough will be quite sticky but keep mixing it till it all comes together and you have a ball of dough
Let the dough rest for a couple of minutes and clean out the counter so you can start the rolling
For the rolling, sprinkle some loose flour on the counter-top and punch the dough. The key is to lengthen and stretch the gluten strands within the dough
Once the dough is relatively elastic and around 25 cm in length, place the butter cubes on the dough and roll the dough, tucking the butter in it
Continue the kneading process by tucking and rolling, you’ll see the dough becomes soft and smooth
Once done, let the dough proof in a warm space for an hour or so
Once proofing is done, divide and shape the dough in small balls
Rest these balls for 15 minutes and then roll the dough so they form these little circles with a diameter of around 8 cm
Now, scoop the mung bean paste and place it in the center of the dough, pull up the sides and seal the dough so no paste can escape
Placing the dough in your pal and rotating it to seal makes the process much easier
Once done, place all dough balls in the oven and cover it with egg wash and sprinkle some black sesame seed on top, let the dough rest for a couple of minutes
Bake for 15 mins
Once, all mung bean buns have obtained a golden-brown color, take them out and serve them