1.Mix the first flour,yeast and water for 3 mins on 1st speed.
2.Ferment at least 4-5 hours or keep in fridge 12-16 hours (overnight).
3.Mix the sponge, dry ingredient & liquid mix on 2nd speed until like a dough.
4.Then add in butter continue mix until the dough is fully developed. 50g/60g each.
5.Proof for 1 hour or until double size. Bake until golden brown 160c for 12 mins.