Step 1: Prepare the Salmon variety of fillings

• If you have leftover salmon, flake it into small pieces using a fork and a small bowl of water.
• In a small bowl, combine the flaked salmon with 1 tablespoon of Kewpie mayo (a Japanese-style mayonnaise) and 1 tablespoon of sriracha sauce. Adjust the sriracha to your preferred level of spiciness. Mix well until the ingredients are evenly combined.

   

Step 2: Season the Rice

• Take your leftover cooked jasmine rice and place it in a microwavable large bowl. 
• Heat up your rice in the microwave for 1 minute or until it is warmed and soft. 
• Add 2 tbsp of mirin and 2 tbsp of rice vinegar - adjust the taste to your liking.

   

Step 3: Shape the Onigiri (BY HAND)

• Wet your hands with a small bowl of water to prevent the rice from sticking. Take a handful of seasoned rice and place it in your palm.
• Flatten the warm rice in your hand and create a small well in the center for the salmon filling.
• Add a spoonful of the creamy salmon mixture into the well.
• Encase the filling with the rice and shape it into a triangle shape or oval triangular shape, whichever you prefer. Press the rice gently to ensure it holds its shape using an onigiri mold.

   

             Shape the Onigiri (BY MOLD)

• Place seasoned rice in the mold, filling it halfway, and create a slight hollow for your chosen fillings. 
• Spoon your desired filling into the hollow, then top with more rice to fill the mold completely. 
• Seal with the lid, and press down firmly. Uncover, invert the mold, and press the bottom button to release your onigiri.

   

Step 4: Pan fry and wrap with nori

• Brush the onigiri with a little bit of sesame oil. Pan-fry the onigiri until it becomes slightly crispy and the rice develops a golden-brown crust. Place them on a baking sheet lined with parchment paper.
• Take nori strips (nori seaweed) and wrap them around the onigiri. The nori strips will not only add a different flavor but also make it easier to hold and eat.
  
  

Step 5: Garnish (Optional)

• If desired, sprinkle some black sesame seeds, white sesame seeds, or toasted sesame seeds over the top of your onigiri for extra flavor and texture.