Combine all ingredients in a blender and puree until smooth. Transfer to a medium saucepan and bring to a simmer for 10 minutes, stirring occasionally. Remove from heat and cool to room temperature before storing in the refrigerator in an air-tight container. The sauce will keep in the refrigerator for up to a couple weeks.
Recipe by Grilling Outdoor Recipes powered by Bull Outdoor Products at https://blog.bullbbq.com/east-meets-west-barbecue-gochugaru-spare-ribs/