Mix dry ingredients. Place water in a bowl and whisk in yeast then oil, eggs, yolk. Mix all into a ball. Let rest 5 minutes. Mix for 30 seconds. Turn dough onto floured surface and knead. Coat with oil. Cover with plastic wrap and let rise 1 hour. Braid and cover with oiled plastic wrap and let rise 1 hour. Preheat oven to 400 degrees with rack in middle. Brush with egg wash. Bake for 20 to 25 minutes until top is golden brown. Let cool on rack.
Go to full version of