Place the onion, garlic, scallions and ½ cup of the cilantro in the food processor.

Place a pot over medium-high heat. Add the water and pork ribs, bring to a boil. Reduce the heat to medium- low. Add the onion mixture salt and pepper and let it simmer for 25 minutes.

Add the guineo, potato and ground cumin, cover and cook for 45 minutes more or until the pork is cooked.

Add the remaining cilantro and serve.