I had never noticed this before. bear fat is supposed to be great for making pie crust. I did render some down once but not to oil. It set up when it cooled. Took bird seed and filled a small dish with it and made feeder blocks for the winter with it. Had to keep them frozen or they would melt. Did the same with deer fat. Thing I noticed was that melting it, some seperated but most the fat stayed in a lump. Just left it on till it all melted.
Let me start off by saying I am not a farmer.
I am a deer hunter and I do own a tractor and have all of the equipment - but that does not make you a farmer any more than standing in the garage makes you a car - well, you get the picture!
Having said that - and with most of my ineptitude fairly well hidden - I do think that buckwheat is one of the most under rated cover crops out there.
I say cover crop because I see mixed results as it relates to the deer eating the plants.