1. Mix yeast and warm milk together for 5 minutes.
2. Mix butter , egg and sugar together.
3. Mix 1st mixture and 2nd mixture together.
4. Whisk them for 30 minutes
5. Mold them for 50 grams per each.
6. Leave them for 30 minutes and cover them with wet cloth.
7. Warm oven at 180 c.
8. Spread them with strawberry jam and custard.
9. Spread them with egg white of milk.
10. Bake them for 20 minutes
11. Decorate them up on you like.