I am a fairly advanced home cook and, being a single mom, can make a feast out of just about nothing, but I'm having issues with tender beans. I can cook pintos just fine, but black beans are proving to be my nemnisis. Soaked overnite (can you soak beans too long?) and in the crockpot w/ sauteed onions, garlic, chorizo and seasonings. Still chewy. Possibly do they get stale? They have been stored in a glass jar with a cork lid for a few months, but, since they're dried, I didn't think months would matter. Any advice? and how do I save my dinner tonite? Should I just blend 'em? Help!