I bought a bag over already overripe bananas a few weeks ago, and put them in the refrigerator untilI could get around to dealing with them (dividing into one-cup measures and freezing). However, life got in the way, and I just finally had some time to take them out. They are beyond overripe: totally soft and translucent. Does anyone know if they are still usable, particularly for banana cake, which was the original plan? They don't smell fermented, by the way, it's just that they're super-soft.