Cut the cucumber, scallions, shallot and chilli into thin slices (you can decide how to cut them but thin pieces work better). Place them in a bowl and add the juice of 1 1/2 lime, 3/4 tbsp of soy sauce, 1 tsp of fish sauce and 1 tbsp of sesame oil. Mix well, cover the bowl and leave the vegetables to rest in the fridge while you prepare the other ingredients.

Cook the steak according to your preferences and based on how thick it is. Season the steak with 1/2 tbsp of olive oil and a pinch of black pepper before cooking it. To prepare a rare medium-sized sirloin steak you should cook it for approx. 3 minutes on each side. Once the steak is ready, transfer the meat on a plate and cover it with a piece of aluminium foil. Wait 5-10 minutes before cutting it.

Wash the salad leaves and the mint. Roast the peanuts in the oven with a pinch of salt; for extra flavour, you can toast the peanuts in the pan previously used to cook the steak. 

Assemble the salad, use the marinade from the bowl with the veggies to season your dish. Finish off the salad with the peanuts, a few thin slices of lime (washed), a pinch of black pepper and, if necessary, a pinch of salt. Mix all the different ingredients just before serving.