The Best Bun Bo Hue (Spicy Vietnamese Beef Noodle Soup)

Name: The Best Bun Bo Hue (Spicy Vietnamese Beef Noodle Soup)
Prep time: 30 min
Cook time: 3 h 15 min
Total time: 3 h 45 min
Cuisine: Vietnamese
Ingredients: 2 lb beef shank (with bone, see note 1); 1 lb beef chuck (see note 1); 2 lb pork hocks (cut into chunks); 3 cloves garlic; 3 tbsp Bun Bo Hue powder (see note 2); 1 tbsp shrimp paste; 1 daikon (cut into chunks, see note 3); 1 yellow onion (see note 4); 2 stalks lemongrass (cut into 2 inch pieces); 2 tsp salt; 2 tbsp fish sauce; 1 tbsp granulated sugar; 1 can chicken broth (14.5 oz); 2 tsp annatto seeds; ¼ cup vegetable oil; 2 tsp chili flakes; 1 shallot (minced); 1 stalk lemongrass (minced); 2 cloves garlic (minced); ¼ tsp salt; 1 package thick rice noodles (1 pound); 1 roll cha lua (optional, thinly sliced); ¼ cup cilantro (minced); 2 stalks green onions (thinly sliced); 1 cup bean sprouts; 2 limes; mint to taste