Creating the ultimate Caldo de Res can be straightforward if you follow these simple steps:

1. Prepare the Beef: Rinse the beef shank or short ribs under cold water. Pat dry with paper towels.
2. Boil the Beef: In a large pot, add the beef and cover with 10 cups of water. Bring to a boil over high heat.
3. Skim the Foam: Once boiling, skim off any foam that rises to the surface. This helps to ensure a clear broth.
4. Add Aromatics: Add the quartered onion and minced garlic to the pot. Reduce the heat to medium-low and simmer for about 1 hour.
5. Add Vegetables: After an hour, add the chopped carrots, cubed potatoes, zucchini, and corn. Stir gently.
6. Season: Season with salt and pepper to taste. Let the soup simmer for another 30 minutes, or until the meat is tender and the vegetables are cooked through.
7. Check for Flavor: Taste the broth and adjust seasoning if necessary.
8. Serve: Remove the beef from the pot and shred it into bite-sized pieces. Return the meat to the soup.
9. Garnish: Serve hot, garnished with fresh cilantro and lime wedges on the side.

These steps will guide you in creating this incredible soup effortlessly.