g/9oz boneless, skinless chicken thighs, sliced into 1-2.5cm/½-1in cubes• • sea salt flakes • ground white pepper • cornflour • rapeseed oil • large knob fresh root ginger, peeled, cut into large slices • garlic cloves, crushed, but left whole • red chilli, sliced into rings • Shaoxing rice wine (or dry sherry) • ml/2fl oz low-sodium light soy sauce • ml/2fl oz toasted sesame oil • caster sugar •