For seed saving and planting next year? Yes the embryos would be dead.

For eating? If they thoroughly dried inside as well as outside then you should be able to use them but they will have a "roasted" bean flavor. You'll have to decide how much that flavor appeals to you. Personally I'd be tempted to try grinding some of them (like coffee beans) and using it like a sprinkle on seasoning.

Next time if they can't be allowed to just dry on the vine then why not harvest them and freeze them? Much better end product.

Dave

Hmm, roasted dry beans. That flavor might be a good addition to some recipes. Now you've got me thinking about intentionally roasting some just to try it out.

Rodney

I just saw a "recipe" a few days ago for tea made from roasted adzuki beans. It was, not surprisingly, bright red.