Thanks for this. For most of my life I thought it was a sort-of acronym for "CANada Oil, Low Acid" (as it's lower in acid than other rapeseed oils). Your etymol

Thanks for this. For most of my life I thought it was a sort-of acronym for "CANada Oil, Low Acid" (as it's lower in acid than other rapeseed oils). Your etymology is the correct one.