Sauté aromatics: In a large pot, heat olive oil over medium heat. Add onion, bell pepper, and garlic. Sauté until fragrant and translucent.
Cook the meat: Add ground pork and cook until browned. Stir in adobo, sazon, oregano, and tomato paste. Cook for another 2 minutes to deepen the flavor.
Add liquids: Pour in the tomato sauce and chicken broth. Add olives and vinegar. Stir well.
Stir in masa base: Mix in the grated plantain and yautía (or mashed shortcut). Stir to thicken and bring to a gentle simmer.
Simmer: Cover and simmer on low heat for 1 hour, stirring occasionally to prevent sticking.
Final touches: Adjust salt and pepper. Stir in fresh chopped cilantro before serving.