Using a sharp knife or mandoline, slice 6 baby dutch potatoes lengthwise into ¼" slices. Drizzle potato slices with 1 tablespoon olive oil and toss to coat with your hands.
Place potato slices in a single layer on a baking sheet and add a sprinkle sea salt and sprinkle black pepper. Bake for 10-12 minutes.
Flip potatoes over. Return the baking sheet to the oven and cook for an additional 10-12 minutes or until the potatoes are golden and crisp. Remove from oven and set aside.
Slice 3 ounces smoked salmon into ½" wide slices. Top each potato round with a slice of smoked salmon, folding it over on itself to create some height.
Dollop the salmon with a scant teaspoon of ½ cup creme fraiche and about ⅛ teaspoon of 1.9 ounces domestic caviar. Garnish with a sprig of fresh dill. Arrange on a platter and serve with champagne or cocktails.
Notes
Avoid assembling the salmon canapés in advance.
Serve these smoked salmon hors d oeuvres within 15-30 minutes of assembling them for the best flavor and presentation.
Leftovers will not hold up for long, so only make enough for the group you're serving.