Nusskipferl (Nut Crecents)

Yield:	10 Servings
Categories:	Cookies, German, Desserts

1	pk	Yeast; Active Dry
4	c	Flour; Unbleached, Unsifted
1	c	Butter Or Margarine;Softened
1	c	Sour Cream
3		Egg Yolks; Large
		FILLING
3		Egg Whites; Large
1	c	Nuts; Ground
1	c	Sugar; Or To Taste
1	ts	Vanilla