It's an oil that is considered heath food. Been around for years but they done found out in the 1980's that it has almost no co-less-ter-all so they developed in on the comercial scale. I worked on some of the equipment that was used in the development work. we made the small combines they used for the test plots.
A real pain to harvest, the header uses an extra roller above to shove the stuff on it. One day they told us they had changed the name, they were no longer rapeseed rollers but canola rollers. They decided to use the taxanomical name for marketing reasons.
Myself I won't use it, even for cooking.
And add all the yeast you want to yer mix, unless you add some car-bo-hydrates that yeast ain't doin' squat.