@Tadgan Hrothgar — I haven’t yet.  From what I’ve read, they used to be a common food in many parts of the world.  Times (and prices) being what they are, seems worth exploring when I have so many at hand! 

Hopefully it’s worth the hassle of processing out the tannins, drying, and grinding into flour. 

 Absolutely! I wonder if it will be easier to grind it when it's still wet, or if you can just grind it into a paste and start making the dough from there instead of drying it out first? 

 @Tadgan Hrothgar — hmmm, might be worth trying! 🧐