Season and brown the beef, then set it aside. Sauté onions, garlic, sofrito, and tomato paste. Add the browned beef back to the pot along with carrots, potatoes, peppers, and cilantro. Pour in water and Knorr beef base. Season with the same seasonings used earlier. Simmer for 1.5–2 hours until the beef is tender. Finish with fresh cilantro and serve hot.