Shredded Beef with Lime and Avocado (Salpicón)

Ingredients

• 2 lb. flat-cut beef brisket, trimmed
• 2 cloves garlic, smashed
• 2 bay leaves
• 1 large onion, sliced
• ¹⁄₄ lb. jack cheese, cubed
• ¹⁄₄ cup fresh lime juice
• ¹⁄₄ cup finely chopped cilantro
• 1 tbsp. chopped canned chipotle chiles en adobo
• 4 scallions, chopped
• 3 medium tomatoes, cored, seeded, and finely chopped
• Warmed corn tortillas, for serving
• 1 avocado, pitted and sliced
• Sweet paprika, to taste
• Kosher salt
• freshly ground black pepper