Canola field - Riehen, Switzerland

Canola was originally a trademark meaning "Canadian oil, low acid" and the plant is a cultivar of rapeseed or field mustard. Though the rapeseed oil with 63 % unsaturated fatty acids is a valuable edible oil, it was affected by significant amounts of erucic acid, a known toxin. With the cultivar canola the erucic acid content was reduced below 2 % which is believed to cause no harm in humans.