Place Meatball ingredients in a bowl.

Place cornflour in a bowl with 1 tbsp of the water, then mix until lump free. Then add the soy sauce, sake, mirin and sugar, mix.

Add 2 tsp of Teriyaki Sauce into the Meatball bowl.

Add remaining water into the Sauce and mix. Set aside.

Mix Meatball mixture with your hands. Measure out 1 heaped tablespoon and roll into balls. See Note 3 for tips if mixture is too sticky.

Heat oil in a large skillet over medium high heat. Add all the meatballs and cook, rolling to brown all over, for 5 minutes. They will still be a bit raw inside.

Turn heat down. Give the Sauce a quick mix then add it into the pan. Bring to a simmer then cook for 2 - 3 minutes or until it thickens into a glossy sauce that coats the meatballs.

Serve over rice, garnished with green onions and sesame seeds if desired.