Ingredients:
675g/1½ lb beef fillet, preferably cut from the tail end
65g/2½oz unsalted butter
1½ tbsp paprika (hot Hungarian, if you like a little subtle heat)
1 large onion, very thinly sliced
350g/12oz button mushrooms, thinly sliced
3 tbsp sunflower oil
300ml/10fl oz soured cream
2 tsp lemon juice
small handful of parsley leaves, finely chopped
salt
freshly ground black pepper
Method:
cookit