Add the next 6 ingredients to mixing bowl. Add yeast and mix with dough hook for 6 minutes. The dough will be a little sticky. If kneading by hand, add flour to your surface sparingly until it works without sticking to the surface but is still soft to knead.
Place in oiled bowl, cover and let rise in warm place until double in bulk. about 30 minutes
Punch down dough. Let rise again until double in bulk. About 30 minutes
Punch down again. Divide dough into the equal parts. At this point preheat your oven to 400 degrees.
Mix 1 tsp water with beaten egg yolk and brush onto braided bread. Bake at 400 F for approximately 30 minutes, until golden brown. The egg bread is ready when it sounds hollow when you tap on the top.