Mustard oil is a fiery and delicious flavored oil that’s used in many cuisines around the world. Unlike oils that are merely infused with mustard seeds, true mustard oil is the fat extracted from the seeds of the mustard plant. Yellow Mustard Seeds come from the family of regular brown mustard with enhanced benefits, better Aroma & Taste. The yellow mustard oil is not pungent like regular black mustard oil and maintains the original flavour of the food. It is visible light in colour and is less thick in texture. Ingredients.