Mix chopped shallot, freshly ground pepper, and a few drops of lemon juice with an appropriate amount of crème fraîche
fold in the caviar, adjusting the other ingredients to taste
serve with the chips
notes
If you can't find crème fraîche, sour cream works fine
Since the caviar is the star of the show, you don't want to use chips with a lot of seasoning/ flavor of their own, so a plain potato chip works best. Kettle cooked chips provide a good crunch, and structural integrity to ensure a successful dip. Cape cod original chips are my go to.
Red onion works well as a substitute to shallot
The key is not to overwhelm the taste of the caviar with the shallot and lemon. Leaving those ingredients out entirely is also fine, and results in a more focused expression of the caviar.