Melt butter in a large saucepan over medium heat. Add onions and saute until they are transparent. Stir in the garlic, wine vinegar, hot chilli sauce, pineapple juice, crushed pineapple, brown sugar and lemon juice. Season with Worcestershire sauce, dry mustard powder, pepper, Tabasco sauce and habanero chilli. Bring to a boil, reduce heat and simmer for 20 to 25 minutes.
Stir in the bourbon and simmer for an additional 10 minutes. Store in the refrigerator.