organic 53 acres grown next to me of beans , mostly ragwort and thistles, best yield was 1/2 ton , they're not the best at growing stuff organically or normally tho.Rolled beans as a protein? Being a legume and therefore not needing fertiliser I can imagine they would be easier to find organically than most things?
Always find it interesting to see how you organic guys cope as I don't think itll be too long until the rest of us are encouraged or forced down the same route!