Sautée onion until translucent then add garlic, carrot & celery and sweat down on a medium heat for 3-5 minutes.
Add the beef mince and cook through.
Next, add the stout followed by the chopped tomatoes, pepper, Moor Amoor chipotle ketchup, beans, spices & chocolate.
Simmer gently for about 30 minutes.
Stir in the cooked haggis, if the chilli is to thick add another glug of stout.