1      each          large onion, chopped finely
   2      tablespoons   olive oil
   2      tablespoons   brown sugar
   4      each          cloves garlic, mashed
   475ml                tomato paste
   225ml                tomato sauce
   50ml                 white vinegar
   100ml                molasses
   50ml                 Worcestershire sauce
   1      tablespoon    dry mustard
   1      tablespoon    oregano
   1      teaspoon      thyme

Chip the onion fine and simmer in olive oil until transparent.  Mince the garlic and add to the onion; simmer for another minute.  Stir in the remaining ingredients and bring to a boil.  Simmer for about 15 minutes.  Store in the refrigerator.  Use on any barbecue speciality.