Preheat the oven to 180°C.
Soak wooden skewers in cold water.
Cut the chicken breasts into cubes. Peel the onion and the ginger and cut into pieces. Place the chicken, onion and ginger in a food processor and blitz to a paste. Add the egg whites to the mixture and mix well. Roll the mixture into small balls and roll them through the flour.
Heat a frying pan to hot and add a drizzle of oil. Add the yakitori balls to the pan and seal. Remove from the pan and place on a baking sheet.
Place the ingredients for the sauce in a saucepan and reduce to a syrup. Brush the syrup on to the yakitori balls and then place in the oven and cook for 5 minutes.
Brush again with the soy sauce and sake sauce and then place the yakitori balls on the wooden skewers.
«Add a red chilli to the chicken, ginger and onion mixture to give a little heat to the chicken yakitori.»