Add the cooking oil, onions and garlic to the pan and fry gently until the onions soften.
Add the Chilli and cook for 1 minute.
Add the cumin, cocoa powder, smoked paprika and oregano. Stir to coat the onions and warm the spices through.
Stir in the leftover beef, followed by the pepper. Cook for 1 minute.
Add the tomatoes, puree and gravy. Bring to a steady simmer. Season with salt and pepper.
Add the kidney beans and cook for about 20 minutes until the beef is soft.
Serve with rice and corn chips.