teaspoons olive oil
teaspoons white vinegar
large garlic cloves, finely minced
teaspoon dried oregano
teaspoon kosher salt, plus more to taste
teaspoon black pepper
- Prepare the adobo: Combine the adobo ingredients in a small bowl, or blend in a large pilón or mortar and pestle.
- Prepare the guisado: Pat meat dry and put in a medium lidded bowl or a resealable bag. Evenly coat with the adobo and let marinate for at least 30 minutes at room temperature, or in the refrigerator overnight.
- Heat vegetable oil in a large lidded, heavy-bottomed pot over high. Working in batches as needed to prevent crowding, add beef, shaking loose any additional adobo beforehand. Cook for 3 to 5 minutes, flipping often to brown evenly. Transfer meat to a clean bowl and set aside.
- Lower heat to medium, add 1 tablespoon olive oil and pour in sofrito, adding olive oil as needed if the pan is too dry. Sauté for 5 to 7 minutes until liquid has evaporated.
- Add sazón and sauté for 1 minute. Add the broth (or water), tomatoes and their juices, and bay leaves, and scrape up any browned bits using a wooden spoon.
- Nestle meat into sauce and bring to a simmer. Reduce heat to low, then cover with a lid and simmer for 1 hour, stirring occasionally.
- Add carrot and celery, and cook, covered, for 1 more hour, adding more water or broth if needed. At this stage, check the tenderness of the meat. It should start to get close to falling apart when pressed with the back of a spoon.
- Add potatoes and cook, covered, for 30 minutes more, until meat and potatoes are cooked through and tender.
- Adjust salt to taste, and serve on a plate or in a shallow bowl over a mound of white rice.