INGREDIENTS
4 1/2 cups
all-purpose flour
3 tsp
active dry yeast
14 tbsp
unsalted butter, melted
3
eggs
1/2 cup
sugar
1 1/2 tsp
salt
1 cup
kefir (or milk), warmed
5
potatoes, clean, peeled
1 cup
or more warmed milk
salt
1
onion, chopped
1 tbsp
olive oil
2 tbsp
sour cream
shredded cheese for the top
1
egg, beaten with 1 tsp. water
3 tbsp
unsalted butter, melted (for brushing the top after baking)