I have been trying to make a red sauce but no matter what I do it turns out bitter. I've tried with a couple combinations of chipotle, pasilla and ancho chilis. I've tried roasting the chilis in a saute pan, and in the oven. While I may have burned the chilis a bit in the pan, I am sure there were no burned sections from roasting. I made sure to pick out every last seed as well. Is it possible that the chilis themselves are bitter and there's nothing I can do but search out different varieties/brands? I'm at a loss here.
Also, is there any way to "save" a bitter sauce? Thanks