Combine: Add the mayonnaise, BBQ sauce, honey, yellow mustard, and white wine vinegar to a medium-sized glass mixing bowl.
Mix: Whisk the ingredients together vigorously until the mixture is uniform in color and completely combined.
Strain (Recommended): Place a fine-mesh strainer over a large measuring cup or secondary bowl. Pour the mixed sauce into the strainer and use a silicone spatula to push the sauce through. This ensures a beautifully smooth, restaurant-quality texture.
Store: Pour the smooth sauce into a glass jar (such as a Ball mason jar) and seal with a tight-fitting lid.
Chill: For the best flavor, refrigerate for at least 30 minutes before serving to allow the ingredients to meld. Keep refrigerated for up to 2 weeks.