I'm not a Coward

In my reply to Jay's comment on the last post you'll notice he asked how people dehulled back in the day and, more notably, I gave suggestions that I had never tried and asked him to let me know if he learned anything. This was cowardly, which I realized shortly after posting it. I'll seek to redeem myself with this post, after a day of experimentation.

In her invaluable book on homesteading skills, The Encyclopedia of Country Living (which I would recommend to anyone who wasn't alive during the depression), Carla Emery talks about hulling wild rice. She quotes a description by the USDA in 1885 on the "parching" process Native Americans used to loosen hulls: "It [the grain] is laid on scaffolds about four feet high, eight wide, and twenty to fifty long, covered with reeds and grass, and a slow fire is maintained beneath for thirty-six hours, so as to parch slightly the hull, that it may be removed easily." Wow. Then they would put it in a skin-lined hole in the ground and stomp on it. Commercially wild rice is parched in bushel quantities in big metal cylinders over a fire.

Under hulling in other grain sections she refers to this parching procedure and recommends following this with a once-through in a grinder set at 1/16 of an inch. Garden Manager Ellen says she has often put it through our electric grinder, set wide-open.

This is all I knew this morning.
I started with a very small quantity (~4 ounces) of Perfectly Awnless (but obviously not hull-less) Wheat, and divided it in half. One half I ran through the grinder, set wide open. The other half I parched in a cast-iron skillet over a gas stove, stopping as some of the hulls started to seem scorched and some of the grains started popping. This I followed by putting it in a box with hardware cloth on the bottom and grinding it with my foot. I can say, from trying both, that the grinder worked fine, though it broke many of the grains and ground some flour even though it was set to its widest. The parching went well, and clearly loosened up the hulls, which allowed the grains to leave very easily. I secretly decided right then that I preferred the parching method because, though it required flipping grains smallish amounts at a time, things come out tidier and whole. The fact that the grinder produced flour, cracked grains and whole grains all at the same time seemed a bit sloppy.
This was educational, but it was on too tiny a scale to mimic even the small amounts of grain that we grow, let alone the amount someone would grow for sustenance. So I went a step further. I had a bag of Farro wheat, which has tenacious hulls paired with nasty awns, those pin-like things sticking out of picturesque wheat heads. It was about 24 ounces of material, so I divided it in half and went at it.
Notes:
First of all, each half had a number of grains that had come out during threshing, so I tried to remove as many of those as I could before proceeding. I set them aside (after weighing) as the seed stock to plant next year.
Grinding was frustrating for a couple of reasons. The awns did a good job of blocking the hole, so I had to keep poking at it. Once through the grinder I took the results outside, sifted the flour, then winnowed the chaff. I was left with plenty of broken grain of different sizes, some whole grains, some still in hulls, and a bunch of awns that were too aerodynamic to blow away. After spending a lot of time separating the remaining hulled grain out, I ran it through the grinder again. And then separated it out again. A point about growing your own food: you will never get all the dirt off, and you will consume a few more bugs and a little more fiber than store-bought stuff. I'm ok with that. I'm not sure about 1.5" awns in my flour, but maybe that's good for me too. The thing that would have made this a better possibility is using a hand-powered grinder, since then you can feel the resistance and work with the grain better. Being able to open the stones wider than our grinder permits would have been nice, too.
Parching was not as smooth as with the Awnless, probably because there was more of it. After trying to toast the whole thing at once I divided the batch into two, and it was still a lot. I am not sure I toasted it enough, as it was. When it came to the crushing with my foot many grains came out easily, but some were persistent. I parched these once more and they became easier. The nice thing about the parching vs. grinding was that after parching the awns all broke off completely and became a non-issue. Hooray! The resulting grain looked a lot nicer, because it was mostly clean and completely whole. The parching process took a lot longer than the grinding, but that was because This American Life came on in the middle, and I had to listen intermittently. It would have taken a little less time than grinding, I think, because I didn't need to spend as much time sorting it.
Starting out with 12 ounces of each I ended up with 7 ounces of "grinder-hulled" and 7.5 ounces of "parching-hulled." Not sure what that means.
Conclusion
It seems like it takes a long time to process a little grain this way. I'd imagine that practice and a perfected process would help some, but it is not a speedy thing. Something else to note is that hulled grains store much better in their hulls, so you might do this kind of procedure on demand. Maybe set all those farm kids on it. Also keep in mind that both processes affect the viability of the grains (they won't germinate after being cracked or heated up in a skillet) and the grain will germinate straight out of the hull when planted, so there is no need to hull the seed you want to grow out.
Why bother with hulled varieties, then, if they are such a pain? Because they are pretty and we love them. Also because you'll lose much fewer mature grains to birds, wind, and whatever else, since they are locked in. The last reason was mentioned in the last post, too, which is that some of the hulled varieties have nutritional benefits not available in hull-less varieties.
Whew. I think I'll take a break on grains for a while. They wore me out today! So let it not be said that I shied away from a challenge. I may be silly, but I'm not a fraidy-cat.