Wipe the chicken strips dry with paper towels.
Place the chicken strips in a bowl. Add all the marinating ingredients. Mix. Cover and leave in the fridge for at least 30 minutes.
Heat the oil in a wok or frying pan. To test if the oil is hot enough, pour in half a teaspoonful of the batter into the oil. If the batter does not float within ten seconds, the oil isn’t hot enough. If the batter burns within a few seconds, the oil is too hot.
Dip each chicken strip in the batter and fry. Do this in batches, seven to twelve pieces per batch depending on the diameter of your pan, so that they don’t bump into each other and to make sure that the temperature of the oil does not drop too much. The chicken strips should cook in about three to four minutes, at which time, the batter should be lightly browned. For even browning, turn the chicken pieces over after the first two minutes. Scoop out the chicken strips as they cook and drain on a stack of paper towels. Fry the next batch, and so on, until all the chicken strips are done.
Pour off the cooking oil from the wok or frying pan. Wipe the pan with kitchen paper if brown bits are stuck at the bottom.
Pour the sauce into the pan and reheat gently. Turn off the heat. Dump the chicken strips into the sauce, followed by the sesame seeds, and toss quickly to coat each piece with sauce and sesame seeds.
Scoop out the chicken and transfer to a platter. Sprinkle the scallions on top and serve.