I've also forgotten to share some updated images of the honey locust pods that I intend to use for the candy bars. I no longer have the honey locust pods from 2020, but I was still able to find a reasonably large quantity of honey locust pods from a tree while I was living in Cincinnati. This time, instead of grinding the pods without processing them, I removed the seeds, soaked them in hot water overnight, and then drained out the excess water the following morning. Once I strained the pods, I placed them on a baking sheet and roasted them in an oven at 170°F for about twelve hours or until the pods were dry and brittle to the touch.
Since I now have a grain mill, I cut the pods into small one inch pieces and fed them through the grain mill several times. This process took longer than I expected since honey locust pods have a fibrous texture. Even after multiple passes through the grain mill, I was unable to get a powder finer in texture than sawdust. In order to get around this, I sifted the resulting coarse meal twice: once through a 40 mesh baking sieve and again through a 100 mesh baking sieve. The resulting power after sifting was reasonably close in texture to cocoa powder but is probably closer to fine-grained sand. The second author's video that I most recently posted suggests a particle size of about 30 micrometers for the solids in a candy bar; but I suspect that even with a 100 mesh sieve, I won't be able to get a particle size finer than 254 micrometers.
Here are my most recent images of my attempts at processing the honey locust pods into a fine powder.