Prepare the broth base: Chop 4 tomatoes, a piece of onion, and 3 garlic cloves. Blend these with half of the chipotle pepper, salt, and water to create the broth base.
Cook vegetables: Chop zucchini, carrots, potatoes, and corn into large pieces. Add to a pot with a little oil, salt, and water. Let it cook.
Make meatball mixture: Combine ground beef, chopped onion, tomato, mint, cilantro, an egg, half of the rice, ground pepper, and a bit of salt. Mix well.
Form and cook meatballs: Form the meat mixture into meatballs. Once the broth is boiling, add the meatballs to cook.
Combine and simmer: After adding the meatballs, incorporate the blended broth base into the pot. Let everything simmer together until the vegetables and meatballs are cooked through.
Serve and enjoy: Once everything is cooked, serve the beef meatball broth hot. Enjoy your meal!