Production in the U.S. is limited, but rape oil is of major importance in Europe and Asia. The small, near globular seeds are borne in elongated, closed capsules. They contain 30 to 45 percent of a semi-drying oil. The oil is separated either by solvent extraction or by cold or hot pressing. The cold-pressed oil is used for edible purposes.
Refined oil is used as a lubricant.
The oil is also used for burning in lamps.