Onion Marmalade

I know. It's hard to believe that almost four and a half pounds of red onions, four garlic cloves, one bottle of red wine, a half bottle of red wine vinegar, the equivalent of four large glasses of port, and thyme, were all reduced to four jars of the celebrated Belmont Proprietary Caramelized Red Onion Marmalade.

If I might be so bold as to suggest that this concoction would complement venison and meat sausages most satisfactorily.