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red slaw

n. A condiment made with green cabbage, vinegar, and ketchup.

Wikipedia
Red slaw

Red slaw (sometimes called barbecue slaw) is a condiment commonly served on hot dogs, on barbecue pork sandwiches, as a side dish for other types of barbecue, on hamburgers, or with other foods. It is an essential part of " Lexington style" North Carolina barbecue.