Heat a wok or large frying pan over medium-high heat. Add 1 tablespoon sunflower oil, 1/2 onion, sliced, 2 button mushrooms, quartered, 1/4 carrot, thinly sliced, 1 small handful tinned bamboo shoots, rinsed and drained (about 25 grams), 1 small handful tinned water chestnuts, rinsed and drained (about 25 grams) and stir fry for 1 minute. Add 1 small handful beansprouts (about 50 grams) and stir fry for another 30-40 seconds. Add 1 portion chicken for Chinese takeaway style stir fry dishes and 1/4 teaspoon MSG and mix well. Add 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.