Sweet Potato Yeast Rolls

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   ["In a large mixing bowl, dissolve yeast in warm milk, then add 1 teaspoon of sugar & let stand for 5 minutes.", "Add the sweet potatoes, egg yolks, butter, salt, the 1/3 cup sugar & only 2 cups of the flour.", "Beat util smooth, then stir in enough of the remaining flour to form a soft dough ~ All of the last 2 cups of flour might not be used!", "Turn onto a floured surface & knead until smooth & elastic, about 6-8 minutes.", "Place dough in a bowl coated with cooking spray, turning once to coat the top.", "Cover & let rise in a warm place until doubled, about 1 1/2 hours.", "Punch the dough down, then turn onto a lightly floured surface & divide into 30 balls.", "Roll each ball into a 10"" rope, then tie each rope into a loose knot.", "Place the knots of dough 2"" apart on baking sheets coated with cooking spray.", "Cover & let rise until doubled, about 30 minutes.", "About 15 minutes before the rising is finished, preheat oven to 350 degrees F.", "In a small bowl, beat egg whites & cold water. Brush this egg wash over the rolls, then sprinkle each with sesame seeds.", "Bake for 15-17 minutes or until lightly browned.", "Remove from pans to cool on wire racks."]

* Per serving · 4 servings · Values may vary.