What is Black mustard?
[[File:Sa mustard.jpg|thumb|Black mustard seeds]] [[File:Brassica nigra silique.jpg|thumb|Black mustard]] '''Black mustard''' (''Brassica nigra'') is an [[annual plant]] grown for its [[Seed|seeds]], which is commonly used as a [[spice]]. It is native to the [[Mediterranean region|Mediterranean]], and has been cultivated for a very long time. With this cultivation it was also introduced to other regions of the world. {{Commons category|Brassica nigra|''Brassica nigra''}} {{Multistub|biology|food}} [[Category:Brassicaceae]]