Grandnina's Birthday Rolls

Grandnina's Birthday Rolls
This is my grandmother's recipe. She would make these for every holiday and our birthdays. I would always look forward to these rolls.

1 pkg yeast
1/2 cup lukewarm later
1 tsp salt
1 cup scalded milk
2/3 cup shortening (Crisco)
6 to 8 cups flour
2 eggs
1/2 cup sugar
1 cup potatoes, mashed
butter

Add shortening, sugar, salt and eggs to potatoes. Cream well. Dissolve yeast in lukewarm water, add to lukewarm milk, and add to potato mixture. Add sifted flour to make stiff dough. Toss on floured board and knead well. Put in large bowl and let rise until doubled in bulk. Turn out on floured board and kneaded slightly. Rub over top with melted butter. Place in a bowl. Cover tightly and place in refrigerator until ready to use. Shape and let rise 1 hour before baking time. Bake at 400 degrees for 15 minutes or until edges start to brown.