Are Ketchup and Mustard Acidic? The pH and Health Impact
                                
                                
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                                    4 min read                                
                            
                                According to food science data, most commercial ketchup has a pH level between 3.7 and 4.0, classifying it as significantly acidic. The answer to "Are ketchup and mustard acidic?" is a definitive yes, with both condiments containing ingredients that contribute to their low pH.