Return yudane to room temperature 30 minutes before using.
Place all ingredients except butter into Thermomix bowl and knead 4 minutes.
Add butter, knead 1 minute.
Transfer dough to pastry mat, shape into ball let proof in a warm place covered loosely with cling wrap/damp towel until doubled in size (approx. 45-60 minutes).
Punch down dough to deflate. Divide dough into 2 equal portions and roll into a round shape. Let rest for 10 minutes.
To shape each mini loaf, flatten a ball into a long oval shape. Fold 1/3 from right edge to the middle and press. Fold 1/3 from left edge to the middle and press lightly. Roll it out slightly and roll into a cylinder.
Arrange dough logs, seam side down in a bread loaf tin (I am using a 450g Pullman Loaf Tin 8x4x4") and let proof for approx 40 minutes until dough fills up 80% of the tin. Ideally, the best temperature for 2nd round proofing is at least 30°C to 38°C. On days when it's cold, you can heat up a cup of water in the microwave for 30-40 seconds then proceed to leave your dough inside the microwave to rise. During last 15 minutes, preheat oven to 190°C.
Bake for 25-30 minutes at 180°C until golden brown. Remove milk bread from tin and allow to cool completely on a cooling rack for at least an hour before slicing and serving.