Hi Mindy, That sounds very odd. The salted butter is probably why it was too salty, but I think one of your ingredients must have gone bad, because the bread shouldn’t have a bitter or sour taste at all. Or did you use baking soda instead of baking powder? That would taste both bitter and sour, so that could be it. It needs to be baking powder, not baking soda. Hope you’ll try again!