Make the filling: In a medium bowl, combine the albacore tuna, mayonnaise, hot sauce, and rice vinegar with a fork until evenly combined. Stir in the scallions.
Grab roughly a ½ cup of sushi rice and gently press into a thick oblong shape in one palm of your hand.
Step 3 cont.
Add a tablespoon of the tuna filling, pinched together with your fingertips, to the center of the rice and close the rice over the filling.
Step 4
Gently shape the rice ball into a wide triangular shape using the palms of one hand and the fingers of your other hand, rotating the rice ball as you go.
Step 4 cont.
Wrap each onirigi in a nori sheet and place an additional small spoonful of tuna filling on the top of each onigiri. Serve immediately.
Step 4 cont.
Wrap each onirigi in a nori sheet and place an additional small spoonful of tuna filling on the top of each onigiri. Serve immediately.