Cut pork into bite size pieces, trim fat. Heat 1 Tbsp. oil in deep pot over high heat and add meat. Braise. Remove meat and drain all but 2 Tbsp. of juice. Add the chopped onions and chopped garlic. Saute til soft.
Return meat and add the water, sugar, cumin, chili powder, oregano, salt. Bring to boil, cover and reduce heat. Mix the flour and water in a bowl til blended, stirring pot, cover and simmer 45 minutes.
Remove casing from chorizo and cut into 1 inch slices, cut potatoes into bite size pieces, cut tomatoes into chunks and add to pot. Add string beans, cover and simmer 30 minutes til meat and potatoes are tender. Tortillas and refried beans to well with this dish.