Crumble yeast in a cup; add water and sugar; let it stand until you mix butter and flour as for pie crust. Make a well and add whole eggs, salt and yeast mixture. Mix until smooth and dough leaves the side of the bowl. divide into 4 pieces and roll out as thin as possible; spread w/ filling. Roll as for jelly roll. Place on a greased pan, brush w/ egg yolk which has been beaten. Let stand in warm place for 1 hr. Bake at 350 for 30-45 minutes or til brown. FILLING: Mix all together and cool. May substitute 2 ts. vanilla for the lemon rind and lemon juice. SOURCE: Family recipe. File ftp://ftp.idiscover.co.uk/pub/food/mealmaster/recipes/mmdja006.zip