Sourdough Shokupan/Milk Bread (with Sweet Stiff Starter)

RECIPE
Sweet Stiff Starter (peak in 8-10 hours)
55 g active starter (100% hydration)
165 g bread flour (12.7% protein content)
65 g water
30 g sugar

133 g bread flour (12.7% protein content) or more as needed
90 g whole milk or more as needed
12 g milk powder
45 g sugar
5 g salt
32 g unsalted butter,softened

Please watch the video for the instructions.
For written recipes & instructions visit: https://whattocooktoday.com/sourdough...