- 2lbs pork neck bones, cut up - 1 large spanish onion, diced - 3 medium or 2 large carrots, diced - 4 cloves garlic, finely chopped - 2 large floury potatoes cut into large (1 inch) dice - 1 large sprig rosemary - 1x8oz can chopped tomatoes - 1x8oz can cannellini or other small white bean - 2x16oz cans Guinness - 2-3 tablespoons vinegar - (optional) 2 teaspoons brown sugar - salt and black pepper - (optional) 1/4 teaspoon hot red pepper flakes