01 - 
                In a small bowl, blend rice vinegar, sugar, and salt until the sugar dissolves fully. Pour the seasoned vinegar over the warm sushi rice and fold gently to distribute evenly.
              
              
              
                02 - 
                Transfer the seasoned rice onto a tray lined with plastic wrap. Press the rice gently to form an even layer, cover, and refrigerate for at least 4 hours or overnight.
              
              
              
                03 - 
                Dice salmon into small cubes and place in a bowl. Add Kewpie mayonnaise, sriracha, soy sauce, scallion, and sesame oil. Mix thoroughly. Cover and refrigerate until needed.
              
              
              
                04 - 
                After chilling, cut the rice into 16 uniform rectangles. Heat vegetable oil in a pan over medium heat. Fry rice pieces on both sides until crisp and golden, then drain on paper towels.
              
              
              
                05 - 
                Top each crispy rice rectangle with a slice of avocado, a generous spoonful of spicy salmon mixture, and slices of jalapeño. Garnish with toasted black and white sesame seeds. Serve immediately.