What has the most fat on a steak? A Guide to the Fattiest Cuts
                                
                                
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                                    4 min read                                
                            
                                According to USDA grading standards, Prime beef has the most abundant marbling, indicating a high concentration of intramuscular fat. For those seeking richness, what has the most fat on a steak is a crucial question, as fat content is directly tied to flavor and tenderness.