Maybe this is a thing and we are just late to the party but while camping a few weeks ago we did some potatoes in foil on the fire. Went to get the toppings and we had not put any sour cream in the camper. Wife came out with the French onion dip (the refrigerator kind, not the jarred stuff), after all it is just sour cream and onion flavorings. Wow, it is really good on a tater.