I made a gluten exception for this. See why?
1 c warm water
1 tsp sugar
2 packets of yeast
Wait 10 minutes for the mixture to become foamy.
1 T salt
1/2 c vegetable oil
Now mix in about 3.5-4 c unbleached flour, one cup at a time. Once the mixture becomes stiff, start kneading with floured hands. Knead for about 7 mins, turning the dough over often.
Add a little vegetable oil to the outside of the kneaded dough ball and put it in a bowl. Allow to rise in a slightly warmed oven (turn the oven on for a few min, then off before you put the dough in) for about one hour, or until the dough doubles in size.
Cut the dough into thirds and roll out (using flour) into long coils. Braid it, starting in the middle of the loaf and working out to either end. Place onto a greased glass baking pan. Allow to rise for 15-30 additional minutes at room temperature (the dough should double in size again). Glaze with one egg yolk mixed with 1 tsp water. Bake for 30-45 mins at 375.