Sweet caramelized onions and southwestern spices transform ordinary ketchup into something special. Use it to build a burger that speaks to you (we love it on burgers with bacon, lettuce, tomato, avocado, and sharp cheddar cheese).
Heat the oil in a medium sauce pan over medium-low heat. Add the onion and cook, stirring occasionally, until browned and very soft, 15 to 20 minutes. Add the vinegar and scrape up any browned bits from the bottom of the pan. Stir in the ketchup, red pepper flakes, chile powder, cumin, cinnamon, cloves, several grinds of black pepper, and 1/4 cup water. Simmer for 5 minutes to thicken slightly and meld the flavors. The ketchup keeps for about 2 weeks in the refrigerator; serve at room temperature.
nutrition information (per serving):
per 1 Tbs.;
sat fat g