- 1 large red onion, finely diced
- 2 Tbsp. butter
- ½ tsp. kosher salt
- ¼ tsp. black pepper
- ½ tsp. Worcestershire sauce
- ½ cup brown sugar
- 2 Tbsp. honey
- ½ cup cider vinegar
- ½ tsp. soy sauce
Melt butter in a saucepan. Add onions, salt and pepper. Cook on medium-low heat until the onions are caramelized and a deep auburn color, about 30 minutes.
Add remaining ingredients to the saucepan. Raise heat to medium and bring to a boil.
Reduce heat. Cook, simmering, until reduced by half. Remove from heat.
Blend until smooth using an immersion blender. (If your onions are diced really fine, you may skip this step.)
Let mixture cool. Store in the refrigerator.
Photo by Burhan Rexhepi.
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