Irish buttermilk brown bread, again

This was Irish buttermilk brown bread, again!

I replaced buttermilk with the mixture of milk and yogurt the last time. This time I used buttermilk, so it was buttermilk bread literally! The melted butter seemed to be absorbed by the dough nicely this time. Was it a magic of buttermilk??

The baked bread looked just like the last one.

It tasted as wonderful as the last one. Conclusions: buttermilk or the mixture of milk and yogurt, that's not a matter.