How can a sauce be 0 calories? The science behind zero-cal condiments
                                
                                
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                                    4 min read                                
                            
                                Did you know that in the US, a product can be legally labeled as having "0 calories" if it contains fewer than 5 calories per serving, according to FDA regulations? This interesting nutritional fact helps explain exactly how can a sauce be 0 calories and reveals the surprising science behind these low-energy flavor enhancers.