If not smoking, boil potatoes until you can stick a fork into them easily. Skip to step 5
Clean & dry the potatoes and place in a bowl. Sprinkle with the salt and pepper and stir in 1 tablespoon of the olive oil. Toss to coat.
Place in smoker and cook for 3 1/2 hours, or until a fork pokes easily through the potatoes. Remove from smoker and allow to cool fully.
Dice the cooled potatoes into 1-inch pieces. Add to a medium bowl with chopped onion, red wine vinegar, Dijon mustard, crushed garlic, red pepper flakes, smoked paprika and mayo. Stir to combine.
If potatoes weren't smoked, also add 2 teaspoons of liquid smoke and an additional 1/2 teaspoon of smoked paprika.
Toss in the parsley and mix once more to incorporate.