I would have to be oatmeal.
Flaky, but still solid until I'm put in the boiling water - then I just become a big bowl of mush!!

Thank you for your responses, everyone! I really enjoyed reading them.

There are exceptions, of course, but I have a feeling that we are not going to achieve that coffee bean status until we reach our perfected state in heaven. As it is written:

Being confident of this very thing, that He who has begun a good work in you will complete it until the day of Jesus Christ. Phillipians 1:6