Dissolve yeast in warm water with sugar, about 10 minutes.
Add salt, butter, eggs, and mashed potatoes. Mix well.
Add the flour, one cup at a time, kneading well in between. You may need anywhere from 6 to 7 cups. Knead for about ten minutes, until the dough no longer sticks to the side of the bowl and is smooth and elastic.
Cover and let rise, 1 hour.
On a countertop dusted with flour, dump out the dough. Divide dough in half. Roll each half into a large circle. Using a pizza cutter, cut the dough like a pizza into 16 triangles, or 32 total triangles. From the outside in, roll up the dough into a crescent shape. Lay on a greased cookie sheet and cover with a clean dish towel.
Let rise for 60-90 minutes or until doubled in size.
Bake at 375° F for 15 to 20 minutes. Remove when tops are golden brown.
ENJOY!