Cooking rice first. Wash rice thoroughly and repeat until water becomes almost clear. Repeat rinsing and draining for at least 3-4 times until the water becomes fairly clear. Place the drained rice together with the appropriate amount of cold water in a heavy based medium saucepan and soak for at least 30minutes.

Start cooking the rice with the high heat, covering with a lid and bring to boil. Once it reaches to boil, then reduce the heat to the lowest heat and simmer for about 12-15 minutes or until water is absorbed. You must keep the lid closed at all times as you are steaming the rice, not boiling. Once rice is cooked, leave it to set with the lid on for another 15 minutes.

While cooking the rice, prepare for the fillings. Mix each fillings in a separate bowls and set aside. Quickly boil frozen peas with a little salted water for about 3-4 minutes, drain and leave them to cool. And then chop cooked peas finely chop or blitz for few seconds to make fine pieces. Flake up grilled salmon.

Transfer piping hot rice into two separate medium bowls to the ratio of one 2/3 to one bowl and 1/3 to another bowl. And then prepare water in another bowl. Leave 1 tbsp of salt on a saucer. Mix chopped peas into 1/3 of rice and mix.

Wet both hands and then touch salt with three wet finger tips and then spread salt to over both palms by gently rubbing both hands. Take a handful of the rice and then make a bowl by shaping it into triangular shape.

Once you formed a triangular shape, poke the middle with an index finger and then add one filling. Cover the hole with a little extra rice and the shape it back to triangular again. Repeat this with the rest of rice and different filling. Best to use tuna mayonnaise filling for pea rice and use salmon filling and katsuobushi filling for plain rice.

On a plate, sprinkle mixture of black and white toasted sesame seeds. Take katsuobushi filling rice ball and then run through the 3 surfaces that are not triangle shape. Use nori sheet to cover two triangular side of salmon rice ball. Serve with Japanese pickled vegetables on the side.