Bulgarian Easter Bread (Kozunak) - cooking recipe

Ingredients

2 1/2 tablespoons yeast
1 1/2 tablespoons sugar
1 1/2 teaspoons salt
1 egg, beaten lightly
1 1/3 cups warmed milk
1 1/2 cups raisins
3/4 cup rum
2 lemons
5 lbs flour (you may not use it all)
1/2 cup butter (1 stick)
1/2 cup vegetable oil
2 cups milk
2 cups sugar
11 eggs
2 teaspoons vanilla extract (vanilla powder is fine)
1 1 cup hazelnuts or 1 cup walnuts, are fine too

Preparation

Mix first five ingredients (yeast, small amount sugar, salt, one egg, warm milk) in a large bowl.
Cover and leave in a warm place for 40 minutes.
Put raisins in rum to cover, and set aside to soak.
Grate and juice the lemons.
Set aside.
Sift 4 of the five pounds of flour onto a large tray or other work surface.
(You can estimate- does not need to be precise.).
Melt butter and combine with oil.
Heat 2 cups of milk and sugar on low in a small saucepan until warm.
Separate 4 of the eggs; set aside the yolks for brushing.
Beat the whites with the other 7 eggs.
Add a handful of the flour from the work surface to the warm yeast mixture.
Bit by bit, mix in with a spoon the rest of the flour, the milk mixture, the beaten eggs and the butter/oil mixture.
When most of it is together, mix in the lemon juice and zest, and the vanilla.
Adding more flour to the work surface if necessary, dump out the dough and knead until it holds together well.
Let the dough rest in a warm place until double in bulk (1-2 hours).
You may need to divide between two bowls.
Punch down and knead the dough.
Drain the raisins and dredge in flour.
Work about half of them into the dough as you knead, a few at a time.
Let the dough sit and rise again (another 1-2 hours).
Preheat oven to 425 (400 if your oven runs hot).
Punch down and knead again.
Divide the dough into 8 parts.
Each of these, divide into three parts; roll them long and braid into a single loaf.
While braiding, work the remainder of the raisins between the strands.
Brush the loaves with the reserved egg yolk and stud the top with nuts.
Bake the loaves about 30 minutes or until golden brown.
(We usually did about 3 loaves at a time.) You can also use the dough to make smaller rolls, if you prefer; bake for proportionally less time.