Why Gold Tuna Cuts at 4mm: The Standard Refined Over 12 Years
Gold Tuna has kept one unshakable rule for more than 12 years: every tuna slice is cut exactly 4mm thick. This article explains why 4mm creates the most stable balance of flavor, temperature, density, and texture—forming the foundation of our omakase experience in Sinsa. 1. The Moment Thickness Becomes Flavor Tuna changes completely depending on how thick it is cut. Too thin, and the grain collapses. Too thick, and the fat loses its rhythm. Every slice begins with the same question: Does this thickness hold the structure of flavor? “Flavor begins not with technique, but with structure.” 4mm is not a habit. It is the backbone of a single bite. 2. Why Exactly 4mm? Thousands of cuts, endless tastings, controlled variations in thawing and aging— all paths led to the same conclusion. 3mm melts well but lacks density. 5mm is generous but the temperature flow breaks. Only at 4mm do fat and protein meet at the same timing, melting in a stable, fully developed sequence. That is why this standa...