1. Prepare the tangzhong: in a saucepan, mix water and flour at 65 degrees Celsius. When the mixture thickens, set aside.
2. Gently mix all the ingredients (except the milk) with 50g of cooled tangzhong.
3. Knead while slowly adding the milk.
4. Using a stand mixer, knead for 20 minutes at medium speed. (If kneading by hand... be brave!)
5. Cover with a damp cloth and let it rise for 1 hour and 30 minutes.
6. Punch down and divide into 4 balls. Let rest for 15 minutes.
7. For each portion: Flatten with a rolling pin, shape into a fold, and place in the mold. Let it rise for 45 minutes.
8. Brush with milk and bake for 20 to 25 minutes at 180 degrees Celsius.