Braised Beef

Bahan-bahan (4 porsi)

• 3 pounds boneless beef chuck roast (cut into 3- to 4-inch pieces (I cut mine into 4 pieces))
• 1 tablespoon kosher salt
• 1 teaspoon ground black pepper
• 1 tablespoon extra-virgin olive oil
• 1 large yellow onion (cut into 1/4-inch cubes (about 2 cups))
• 3 large carrots (peeled and cut into 1/2-inch pieces (about 1 heaping cup))
• 3 celery stalks (cut into 1/4-inch pieces (about 1 heaping cup))
• 4 g arlic cloves (chopped)
• 1 cup dry red wine (such as Cabernet Sauvignon, Merlot, or Pinot Noir)
• 4 fresh thyme sprigs (or 1 teaspoon dried thyme, plus optional fresh thyme for garnish)
• 1 cup low-sodium beef broth (plus more as needed)
• Mashed potatoes (for serving)