leg of lamb - watch the video to see (half leg, trimmed, deboned, diced)
king oyster mushrooms - watch the video to see (used as substitute for se or portini mushrooms)
olive oil - watch the video to see (for searing meat and sautéing mushrooms)
butter - watch the video to see (used for sautéing mushrooms and finishing sauce)
salt - to taste (to season meat and mushrooms)
black pepper - to taste (to season meat and mushrooms)
brown stock - 100 ml (about 100 ml, homemade or store-bought enhanced with roasted lamb bones, carrot, celery, onion)
tomato paste - 2 tablespoons (used to flavor and color the sauce)
flour - 5 g (used for thickening the sauce (part of beurre manié))
butter - 5 g (used for thickening the sauce (part of beurre manié))
garlic cloves - 2 cloves (2 cloves, finely chopped)
white wine - 50 ml (50 ml, for deglazing the pan)
fresh parsley - watch the video to see (for garnish)