Season the beef strips with salt and pepper. Slice the broccoli into florets and the stalks into thin strips.
To a stainless steel pan (if possible), place over a high heat and leave to preheat. Then, add the oil and coat the base of the pan. Once searing hot, add the beef strips. Fry for 2 minutes, then set aside.
Reduce the heat to medium/low and deglaze the pan with a splash of stock. Add the stalks into the pan, along with the fresh ginger and garlic. Season with salt and pepper and cook for 3 minutes.
Next, add the beef stock and broccoli florets into the pan. Increase the heat to medium and cook for around 5 minutes, stirring occasionally.
Pour the soy sauce and cornflour slurry (1 tbsp cornflour combined with 2 tbsp cold water) into the pan. Stir to combine, then add the beef strips to heat through. Once thickened, taste to adjust the seasoning and turn off the heat.
Top with lime wedges, spring onion and optional chilli flakes for a little kick of heat.
Note: If you have time, you can velvet the beef which is adding cornflour and a splash of water to the beef ahead of time. Combine to coat the beef pieces and place in the fridge until it’s time to cook. This will tenderize the beef.