Is E631 in Lay's vegetarian?
                                
                                
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                                    4 min read                                
                            
                                E631, or disodium inosinate, is a flavor enhancer that is produced either from animal-based sources like fish and meat or from plant-based sources via fermentation. The vegetarian status of Lay's products containing this ingredient, therefore, is not universal and depends on the specific region of manufacture and product line.