Charles, I asked the question of which oil to use in jest. However, you do bring up a good point. There are basically two types of canola oil. In this case, one would use the food grade. The industrial grade contains erucic acid, not good for human consumption. In fact, out here where a lot of canola is raised, the farmers are very careful on not raising the two types next to each other. By the way, rape seed came from the Latin word rapum which means turnip.