If you don't have a mixer with a dough hook, stir together 1 1/2 cups of the flour, the milk, 1/4 cup granulated sugar, the eggs, yeast, and 1/2 tsp. kosher salt with a wooden spoon. Stir in butter pieces, one at a time, until mixed in (it should take 5 to 6 minutes). Stir in the remaining flour until satiny and elastic (about 3 minutes). Continue as directed in Step 3.