Oriental pork with noodles

INGREDIENTS

• 1 handful Szechuan peppercorns, crushed
• 2 x 350 g higher-welfare pork fillets, thinly sliced
• 2 teaspoons sesame oil
• 2 tablespoons sunflower oil
• 2 tablespoons freshly grated ginger
• 1-3 fresh red chillies, deseeded and chopped, to taste
• 125 g oyster mushrooms, wiped and torn
• 125 g shiitake mushrooms, wiped and halved
• 1 red pepper, deseeded and chopped
• 1 bunch spring onions, trimmed and sliced
• 200 g pak choi, chopped
• 2 cloves garlic, peeled and finely chopped
• 300 g bean sprouts
• 300 g medium egg noodles, cooked
• 2 teaspoons fish sauce
• 6 tablespoons oyster sauce
• 1 small bunch fresh coriander, leaves chopped
• 75 ml organic chicken stock
• low-salt dark soy sauce