Season cornflour with pepper and man grind
Heat 3 tbsp oil on medium-high in a wok or large frying pan. When hot, add your ginger and spring onion, then chilli and garlic, then beef, in batches so the wok doesn’t lose heat. Fry the beef, stirring often, for about 2-3 minutes until browned. Remove and put on paper towels, keep warm. Continue until all beef is cooked.
Serve with rice and your favourite greens.