Add the sour cream or whatever else you've got, and eat with your hands like a hot dog.
So you have to go light on cheese and sour cream.
If using sour cream, add it without reducing heat or waiting.
Combine everything but the sour cream in a bowl, and add water to cover.
Cook over low heat until the sour cream is heated through, two minutes.
Combine the sour cream and the salt in a large bowl.
Stir in the sour cream and bring just to the boil.
Remove from the heat and whisk in the sour cream.
Pretty much any sour cream you buy off the shelf has 10 or even 20 ingredients.
When I finally asked him to hold the cheese and sour cream, he didn't even bat an eye.