Season the chicken with oregano, salt and pepper. Warm the coconut oil in a pot over medium heat.
Brown the chicken for about 3 minutes per side. Add the onion and garlic and stir for 2 minutes.
Stir in the tomato paste, vinegar and water or broth. Add the potatoes.
Cover and simmer for 30–35 minutes, stirring gently. Add a little water if the sauce becomes too thick.
Use a food thermometer to confirm 165°F in the thickest chicken pieces. Check that the potatoes are tender before serving. Continue cooking until 165°F even if the estimated time has elapsed.
Cook and store with care
Chicken: 165°F in the thickest part. Cooking time is only a guide.
Refrigerate leftovers in shallow containers within 2 hours, or within 1 hour above 90°F. Keep the refrigerator at 40°F or below. Use leftovers within 3–4 days or freeze them. Reheat to 165°F with a food thermometer.