Heat a wok or large frying pan over medium-high heat. Add 1 tablespoon sunflower oil and 1/4 onion, sliced, 1/4 green pepper, roughly chopped, 1/4 red pepper, roughly chopped and 1/4 carrot, thinly sliced. Stir fry for another 1 minute. Add 1 portion chicken for Chinese takeaway style stir fry dishes, pinch sea salt, 1/4 teaspoon MSG, 1 generous tablespoon chopped garlic in oil, 1/4 teaspoon crushed dried chilli flakes, the prepared sauce and 200 millilitres light chicken stock. Mix well, bring to the boil and simmer for 2 minutes until the sauce reduces slightly.