h4ppy-chris,
almost missed this post. real interesting stuff.
well impressed on your grey cells.
i'm effectively working on the same in my oil post. quite interesting to see the %. i also feel i might have to invest in some little scales too as it would remove all the faffing between weight and volume.
the Cinnamon/cassia is re assuring - i'd not been sold on the cassia being needed but felt from the trials it's more like the cinnamon that's not needed. i've settled on using both which i think the picture is suggesting (2:1 cinnamon to cassia by volume).