Wash the meat, dab dry and dice. Marinate with 1 tbsp. rice vinegar and 1 tbsp. soy sauce.
Leek onions clean, wash and roughly chop. Peel ginger and cut into very fine strips. Chop plums roughly. Chop chilli roughly.
Heat the oil in a pan and roast the chillies briefly. Take out and fry the meat in 2 portions in hot oil for about 4 minutes each. Add meat, spring onions, plums, nuts, chillies, 100 ml water, the rest soy sauce and 4 tbsp vinegar. Stir in stock and season with salt.