In a heavy saucepan, cook the pork over medium heat, stirring to break up the
meat, for about 5 minutes or until browned. Pour off the fat.
Add onions, and cook until tender. Add garlic, red and green peppers and celery.
Cook, stirring occasionally, for 5 minutes or until vegetables are softened.
Add tomatoes, breaking them up with the back of a spoon. Stir in kidney beans,
hot pepper flakes, oregano, cayenne pepper, hot pepper sauce and salt and pepper
to taste. Bring to a boil; reduce heat and simmer for 20 minutes.
If you prefer a more traditional chili flavor, use cumin instead of oregano,
and add chili powder to taste.