If you have leftover chili, serve it over turkey franks (or the chicken ones) the next day.
chopped red onion
Heat oil in heavy large pot over medium heat. Add onions; sauté until light brown and tender, about 10 minutes. Add oregano and cumin; stir 1 minute. Increase heat to medium-high. Add turkey; stir until no longer pink, breaking up with back of spoon. Stir in chili powder, bay leaves, cocoa powder, salt and cinnamon. Add tomatoes with their juices, breaking up with back of spoon. Mix in stock and tomato sauce. Bring to boil. Reduce heat; simmer 45 minutes, stirring occasionally.
Add beans to chili and simmer until flavors blend, about 10 minutes longer. Discard bay leaves. (Can be prepared 1 day ahead. Cover and refrigerate. Rewarm over medium-low heat before continuing.)
Ladle chili into bowls. Pass red onion, cilantro and yogurt separately.