Mustard Seed
All parts of the mustard plant are edible, including the seeds, leaves, and flowers; it is in the same genus as cabbage and turnips and is an annual plant. Brassica nigra is the plant that produces black mustard seeds. It is native to North Africa and parts of Europe and Asia; black mustard seeds are still very popular in the Middle East and Asia Minor where they originated. The seeds are removed from their seed coats and are very small. They can be ground into a spice or used whole, often added to hot oil to bring out the flavor.