Potato Bread - cooking recipe

Ingredients

1 pkg. dry yeast
1/2 c. potato water (lukewarm)
1/2 c. butter
1/2 c. granulated sugar
3 eggs
1 c. cooked mashed potatoes (reserving cooking water)
1 Tbsp. salt
1 c. all-purpose flour
1 egg yolk
1 Tbsp. water

Preparation

Stir yeast into potato water until dissolved.
Set aside.
In a large bowl, cream butter and sugar.
Beat in eggs, one at a time. Add potatoes and yeast mixture.
Add salt and milk and mix well. Add flour, 1 cup at a time, until you have a stiff dough.
Turn out onto a lightly floured board and knead until smooth and elastic. Put dough in an oiled bowl.
Cover with plastic wrap and refrigerate overnight.