INGREDIENTS
3
Onions, large
1
Russet potato (about 9 ounces), medium
1
Egg
1
Egg yolk
2 cups
All-purpose flour, unbleached
6 3/4 tsp
Salt
1
Salt and ground black pepper
1 tbsp
Vegetable oil
9 tbsp
Butter, unsalted
1 1/2 oz
Cheddar cheese
1 1/2 oz
Farmers cheese
1
Sour cream
4 tbsp
Water
¼ cup reserved chopped caramelized onions