What does mustard powder contain? A deep dive into its ingredients
                                
                                
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                                    4 min read                                
                            
                                Historically, ancient civilizations like the Greeks and Romans used mustard seeds for both culinary and medicinal purposes. So, what does mustard powder contain today? This fine, yellow spice is primarily made from ground mustard seeds, but its exact composition and flavor profile can vary depending on the type of seeds used and whether other ingredients are added.