I see this on offer at the Kroger deli pretty often and I’ve bought, and liked it, but it seemed a tad too expensive so I looked for a recipe.  I found this one and used it for a guide.  This one has two  potatoes and the other ingredients are scaled to suit.  I used four slices of bacon and two or three green onions and a handful of a cheddar/Monterey jack mixture left over from another dish.  Use about 2 to 1 sour cream to mayo in a quantity sufficient to lube it all up.  I boiled 6 eggs to make deviled eggs for an additional side and Mrs J suggested adding a couple to the potato salad.  They work fine in there.  I saw a recipe that mentioned baking the mixture until the cheese melts but I went with a cold dish.  Made an excellent side for the roast pork sammich.