Marinate Beef:
In a large bowl, toss beef with garlic, sofrito, soy sauce, adobo, sazon, oregano, and lime juice until evenly coated.Caramelize Sugar:
Heat oil in a pot over medium heat. Add sugar and cook until it caramelizes.Brown Beef:
Add beef to the pot, cover, and cook for 5 minutes. Flip pieces, cover, and cook another 5 minutes until liquid evaporates.Add Tomato Paste:
Mix in tomato paste and 1 cup water. Cover and cook for 15 minutes until most liquid evaporates.Simmer with Water:
Repeat adding 1 cup water and cooking covered for 15 minutes two more times (3 additions total).Add Vegetables:
Add sliced onion and bell peppers with the last cup of water. Cover and cook 10-12 minutes until sauce thickens and vegetables soften.