What is the Fattiest Part of a Tuna? Exploring Otoro and Other Cuts
                                
                                
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                                    4 min read                                
                            
                                The prized, melt-in-your-mouth experience of high-end sushi is largely thanks to one specific cut. The fattiest part of a tuna is the belly, known as 'toro,' particularly the innermost portion called 'otoro,' which is celebrated for its extreme marbling and delicate flavor.