Homemade hamburger buns

1 c. Milk
1 c. Water
2 T. Butter
1 T. Sugar
1 1/2 t. Salt
5 1/2 c. flour (sifted or just under)
1 T. Yeast

1 egg yoke
1 T. water

Combine Milk, water, butter, sugar and salt in sauce pan and bring to boil. Then let cool to luke warm. Combine flour and yeast in large bowl. Add luke warm liquid to flour and combine. Kneed on counter until not crumbly anymore, then put into mixer and kneed for 7-8 min.
Put into greased bowl. (or I just put it back in the flour bowl). Let rise for 1 hour or until doubled. Punch down dough and break into 12 balls. make tight balls and pinch together at bottom. After they have rested for a few min, push down on balls until they are 3-4 inches and then let rise until double, about 20 min.
Once risen, take the egg and water and mix, and brush on top of balls. If you want you can sprinkle sesame seeds or dried onions on top.
Bake at 400 for about 20 min. until golden brown.