steak - watch the video to see (choose a nice cut)
oil - watch the video to see (for searing)
salt - to taste (for seasoning)
black pepper - to taste (for seasoning)
shallots - watch the video to see (sliced)
garlic - watch the video to see (crushed)
butter - watch the video to see (for basting and sauce, divided)
thyme - watch the video to see (sprigs, plus more for sauce)
red wine - 1/2 cup (1/2 cup)
beef stock - 1 1/2 cups (1 1/2 cups)
balsamic vinegar - 1 tsp (1 tsp)
black pepper - 1/2 tsp (1/2 tsp for sauce)
unsalted butter - 2 tbsp (for sauce, cold, cubed)
salt - to taste (for sauce, to taste)