Mustard oil

Mustard oil refers to either the pressed oil of the mustard plant used for cooking or its pungent essential (or volatile) oil.

Pressed mustard oil is used as cooking oil in many South Asian cuisines; however, sale is restricted in some North American and European countries due to high levels of erucic acid, though some varieties have lower erucic acid content.

The essential oil is produced by grinding mustard seed, mixing the grounds with water, and isolating the resulting volatile oil by distillation. It can also be produced by dry distillation of the seed.