I just roasted some beets in the oven (as usual) but they turned out really bitter. Any idea why or what can I do to save them? 
I found some beautiful yellow, orange and pink beets in a market in Tucson.I boiled them, the skins slipped right off. When I tasted some I was so disappointed at the strong bitter after taste. So I let them cool, sliced and fried them it a little coconut oil. It took away the bitter taste and was delicious. I don't know the consistency of a roasted beet but it you can slice it you might save them by frying.  