sirloin steak - 300 g (300 g)
portobello mushrooms - 300 g (300 g, thickly sliced)
pasta (ratoni) - 300 g (300 g)
red onion - 0.5 (half, sliced)
garlic - watch the video to see (to taste)
butter - watch the video to see (for sautéing)
cognac - watch the video to see (for flaming)
salt - 30 g (30 g for pasta water, more for seasoning)
pepper - watch the video to see (to taste)
heavy cream - watch the video to see (35% fat, quantity not specified)
chicken stock - watch the video to see (for reduction, quantity not specified)
parmesan cheese - watch the video to see (for garnish)
chives - watch the video to see (for garnish)