Make Tangzhong: Add the Tangzhong ingredients into a small saucepan and mix over Medium heat, stirring constantly until a thick, sticky paste has formed. Remove form heat, cover with plastic wrap and allow to cool to room temp.
In a small bowl, combine slightly warm milk about 90-94 degrees, and add your yeast. Wait 10 minutes till yeast becomes foamy.
Combine flour, salt, milk powder, and sugar into the bowl, add your yeast mixture, Tangzhong, honey and eggs, mix cover and set aside to let flour hydrate.
Transfer to a stand mixer with a dough hook and mix on medium-low rill dough forms.
Add your softened butter a tablespoon at a time until it is incorporated.
Mix for at least 7 minutes on medium. If you are having any trouble with butter incorporating into your dough, add flour a tablespoon at a time, mixing for 1 minute before adding more. Do not add too much extra flour, if you have measured out your ingredients, there should be no need to add more flour.
After about 10 minutes total of kneading, dump dough on onto your clean work surface, you should not need to flour it and use your hands for round the dough into a nice ball. Keep your hand in contact with your surface.
Place dough in a lightly greased bowl, and covered with a damp dish cloth and wait for about 2 hours until dough has doubled in size.
Punch dough down and split into 9 balls about 75-85 grams each.
Use the same technique you did before when shaping the big dough to round your 9 pieces. (Keep dough on your surface and use your hands to round out the dough until till it is smooth on top)
Grease a round pan 9 inch pan or a square pan and arrange your balls baking pan
Cover with a damp dish cloth again and allow to rise to 1 hour to 1 1/2 hours until about doubled in sized and filled out the pan .
Preheat oven before making to 350 degrees and make your egg wash by whisking your egg and milk together.
Brush rolls with egg wash and bake rolls for about 30 minutes, peek through oven door after 25 minutes. You sent your buns golden brown on top and puffed.
Remove from oven. They may deflate ever so slightly when they are out of oven and that is okay. Brush with butter if you like and serve warm or at room temp, sweet with jam or other sweet spread or savoury with garlic butter or other spreads.
