Heat oil, brown pork in batches - set aside. Saute peppers and onions until tender crisp. Add pork, tomatoes, garlic, spices and 3/4 to full can (from crushed tomato) water, salt & pepper. Bring to boil, reduce heat and simmer for one and a half hours or until pork is fall apart tender.
Meanwhile, peel & dice sweet potato soak in enough water and the vinegar to cover. Juice & zest lime. Quarter cherry tomatoes & dice the green onions.
Bring chili back to a boil and add the sweet potatoes. Simmer until they are tender. Add beans and simmer for 10 more minutes. Feel free to add more water if the chili gets a little thick on you. Remove from heat and stir in lime juice/zest, green onions and cherry tomatoes.
Serve with rice or pasta and garnish with cilantro and sour cream. Enjoy.