Dollop remaining sour cream over potatoes; top with remaining scallions and several generous pinches of paprika. (bonappetit.com)
Mix in the the remaining sour cream and then in 3 parts mix in the egg yolk mixture until the cake batter is thick and smooth. (girlinthelittleredkitchen.com)
Add salt, 1/2 c. cheese, and remaining sour cream, then stir to combine. (wearychef.com)