Heat oil in a large saucepan over medium heat. Cook onions, garlic, & ground turkey in oil for 6-10 minutes, or until the meat is well browned and the onions are tender.
Mix in the diced tomatoes with juice, beer, coffee, tomato paste and chicken broth. Season with brown sugar, chili powder, cumin, cocoa powder, oregano, coriander and salt. Simmer on medium heat for 20 minutes. Serve with shredded cheese and sour cream