Whisk together the water, milk and flour in a small saucepan util there are no more lumps.
Heat the tangzhong mixture over low heat, whisking constantly until thick enough that the whisk leaves lines on the bottom of the saucepan, about 8 minutes. Remove from heat and cool.
Milk Bread Rolls
Grease a 9 x 13-inch baking pan. Set aside.
Add cooled tangzhong starter, milk, melted butter, egg, sugar, milk powder, salt, flour, and yeast to the pan of the bread machine. Select the dough cycle and press start.
When the dough cycle finishes, transfer the dough to a floured surface. Portion the dough into 12 pieces. Roll each piece into a ball and place on a prepared baking sheet. (See Tip 1)
Allow to rise in a warm place until double in size, about 60 minute. (See Tip 2)
Preheat oven to 350°F.
Brush rolls with egg wash (1 egg plus 1 tablespoon of water). Bake in preheated oven for 15 minutes. (See Tip 3)
Remove from oven. If desired brush lightly with melted butter.
Yield: 12 Milk Bread Rolls (See Tip 4)
Video
Tips/Notes
I'm a total nerd when it comes to weighing stuff. The weight of this dough is just over 23 ounces. To determine the weight of each roll, I divided 23 ounces by 12 rolls, arriving at a weight of around 1.9 ounces per roll.
I consistently follow Julia Child's recommendation regarding the rising of bread or rolls. I turn on my electric oven and leave it on for 1 minute and 45 seconds. I don't set a temperature. Rather, after 1 minute and 45 seconds, the oven is at the perfect temperature for proofing the bread and rolls.
This recipe contains a fair amount of sugar. While the sugar adds to the taste of the rolls, it can also cause the rolls to brown too much. Therefore, after the rolls have been in the oven for about 10 minutes, I tend to cover them loosely with aluminum foil to inhibit further browning.
Because of the tangzhong technique, these rolls remain fresh significantly longer than one would normally expect.