Cook the Beef:In a large pot, combine the flank steak, ¼ onion, garlic cloves, bay leaves, salt, and pepper. Cover with water and bring to a boil. Reduce heat and simmer for 1.5 to 2 hours, or until the beef is tender and shreds easily. Remove the beef and shred with two forks. Discard the onion, garlic, and bay leaves but reserve the broth.
Make the Salsa:In the same broth, add tomatoes, jalapeño, Chile California, red bell pepper, and onion. Simmer until soft about 10 minutes. Blend with about 1 ½ cups of the broth until smooth.
Combine Everything:In a deep pan or large pot, pour in the blended salsa and bring to a simmer. Add the shredded beef and season with bouillon, salt, and pepper. Stir in the potatoes and cook for 5 minutes. Then add the carrots and green beans. Cover and simmer until all vegetables are tender, about 10–15 minutes.Pro Tip: Taste the dish at the end and adjust salt or bouillon if needed for the perfect balance of flavor.