Dissolve yeast in warm water. Add 1 tablespoon sugar and let stand. Heat milk in saucepan until pretty hot to touch, almost scalding. Remove from heat and stir in butter or oleo and 1/2 cup sugar. Cool to lukewarm and add yeast mixture. In large bowl combine salt and 5 1/4 cups flour. Add the yeast and milk mixture to flour and mix. Mix in egg yolks. Mix in enough of last cup of flour for desired texture. ("So it's workable, not too sticky to take out of bowl and knead.") Most of the time I use the whole cup. Knead on floured board until glossy. Grease bowl. Put dough in bowl, rolling it around to grease dough. Cover and let it rise in warm place until double in bulk. Roll out dough to about 1/2 inch thick and cut into individual kolaches with biscuit cutter. Place on greased pan so not quite touching. Brush with softened butter or oleo and let rise again covered until light to touch. Make indention in each and fill with filling of your choice. Bake in 375 degree oven until brown, about 25 minutes. Remove and brush with softened butter or oleo.

Poppy Seed Filling:

Heat milk and when it boils add sugar, flour and poppy seed, stirring vigorously. Cook over medium heat until mixture thickens. Remove from heat. Add butter or margarine and then add vanilla. Cool filling before adding to kolaches dough. Spoon about one teaspoon filling in each kolache

Glaze:

Combine ingredients. Spoon over kolaches while still warm.