Making Caldo de Res is straightforward if you follow these simple steps:

1. Prep the Ingredients: Start by chopping all vegetables and meat to the suggested sizes. This helps ensure everything cooks uniformly.
2. Boil the Water: In a large pot, bring 10 cups of water to a rolling boil.
3. Add the Beef: Add the beef shank to the boiling water. Allow it to boil for about 5-7 minutes. Skim off any foam that forms on the surface.
4. Simmer the Broth: Reduce heat to low, cover, and let it simmer for 1-1.5 hours until the meat is tender. Occasionally stir and skim any remaining foam.
5. Add Vegetables: Once the meat is tender, add the carrots, potatoes, zucchini, green beans, onion, garlic, and corn.
6. Season: Add salt, black pepper, and cilantro. Stir to combine everything. Taste and adjust seasoning if needed.
7. Continue Cooking: Cover and let the soup cook for another 20-30 minutes until the vegetables are tender.
8. Serve: Turn off the heat and let the soup rest for 5-10 minutes for flavors to meld.
9. Garnish: Serve hot with lime wedges and fresh tortillas or crusty bread on the side.

Each step will guide you in creating this comforting soup effortlessly!