Does Onion Have Capsaicin? Understanding Onion's Pungency
                                
                                
                                •
                                
                                
                        
                                    
                                    3 min read                                
                            
                                Many people mistakenly associate the tear-jerking, pungent sensation from onions with spicy compounds like capsaicin found in chili peppers. The truth is that onions do not contain capsaicin at all, as their characteristic flavor and irritant properties come from a different class of chemical compounds entirely. This distinction is key to understanding the unique chemistry of allium vegetables versus peppers.