"Soft, pillowy, buttery clouds...."
all-purpose flour
(0.25-oz.) packet or 2 1/4 tsp. dry yeast
milk, lukewarm
large eggs, room temperature
all-purpose flour
granulated sugar
kosher salt
(2 sticks) butter, softened, plus more for pans
large egg
water
Kosher or sea salt, for sprinkling