Is Expired Yogurt Bitter? And Other Signs of Spoilage
                                
                                
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                                    4 min read                                
                            
                                According to the Food Safety and Inspection Service (FSIS) of the USDA, it is typically safe to eat yogurt up to one to two weeks past its 'sell-by' date, as long as it has been properly refrigerated. However, changes in flavor, including a bitter taste, are clear indicators that the product is no longer safe or pleasant to consume.