First, collect and measure all the required ingredients according to the list.
Secondly, combine mayonnaise, sour cream, Dijon mustard, ketchup, and apple cider vinegar in a bowl and whisk nicely.
The sauce base is ready.
Thirdly, add the spices (Paprika, salt, black pepper, onion powder, garlic powder) into the sauce base and stir for a minutes.
Taste the sauce, and customize according to your taste.
Chill the sauce in the refrigerator for 15 – 30 minutes.
The grilled cheese dipping sauce is ready.
Serve or store the sauce.