How long can you keep used fish oil?
                                
                                
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                                    4 min read                                
                            
                                According to the USDA, properly strained and refrigerated used frying oil can be safely stored for up to three months. However, when it comes to used fish oil, the lifespan is often much shorter due to its high polyunsaturated fat content, which is prone to oxidation. Understanding proper storage and knowing the signs of spoilage is crucial for both flavor and health.