Potato Smørrebrød | Idaho Potato Commission

Ingredients

• 3/4 cup sugar
• 1 cup apple cider vinegar
• 1 cup water
• 1/2 pound pearl onions, peeled (thawed if frozen)
• Pinch of kosher salt
• 6 ounces Idaho® fingerling potatoes
• 5 (3-inch) strips lemon zest
• 3 dill stems
• 1/4 teaspoon black peppercorns
• Kosher salt, as needed
• 1/2 cup mayonnaise
• 2 tablespoons fresh dill, finely chopped, plus small sprigs for garnish
• 1 teaspoon Dijon mustard
• 1 teaspoon white wine vinegar
• 4 Pickled Pearl Onions (see recipe)
• Unsalted European-style butter, softened, for spreading
• 4 slices dense rye bread, about 3 x 4 inches each
• Pepper, to taste
• Shallot, very thinly sliced, for garnish
• Small potato chips for garnish