Carnitas-Style Corned Beef

Bahan-bahan (6 porsi)

• 1 (3.5–4 lb) corned beef brisket, with spice packet (fat trimmed off if you’d like)
• 1 large yellow onion, sliced
• 4 cloves garlic, smashed
• 1 (12-ounce) bottle stout or amber beer (or beef broth)
• 1 cup water
• 1 bay leaf
• 1 teaspoon black peppercorns
• 1 teaspoon smoked paprika
• 3 tablespoons butter
• 3 tablespoons all-purpose flour
• 1/4 tablespoons leftover cooking broth or melted butter
• freshly-ground black pepper