Potato Pancakes with Gravlax and Dill

Ingredients in this Recipe

1 large egg white
1 small yellow onion (about 5 ounces), peeled and grated on the large holes of a box grater
1 tablespoon chopped fresh dill, plus sprigs for garnish
1/2 teaspoon salt
1/4 cup reduced fat sour cream
3 Yukon gold potatoes (about 1 pound), peeled and grated on the large holes of a box grater
Olive oil, cooking spray
Pinch of freshly ground black pepper

See Full Recipe at Martha Stewart