In the bowl of a mixer, pour in the yeast, flour, sugar, salt, water and eggs
Using a dough hook, mix on medium - high speed for 5 minutes
Add the oil slowly and continue mixing until the dough is soft and has absorbed all the oil. About 10 minutes
Remove from mixer, sprinkle some flour on top of the dough and cover the bowl with a clean kitchen towel
Place the bowl in a dark place away from drafts to proof (Could be inside an oven, as long as it turned off). For 1 1/2 to 2 hours or until the dough has tripled its size
Remove dough from bowl and onto a floured surface. If it seems to sticky, add some more dough and mix until you get a nice round ball
Divide the ball into 3 equal parts. Roll each part into a long rope
Attach the 3 ends of the ropes together and braid into a challah shape
Place the challah in a sheet pan lined with parchment paper or silicone mat
Cover with a kitchen towel and let it proof for 30 minutes
Meanwhile, preheat oven to 350 degrees Fahrenheit
In a small bowl, combine the egg yolk, water, sugar and flour
Brush the yolk mixture on top of the bread, covering each nook and cranny
Sprinkle in the sesame seeds
Bake for 25 to 30 minutes or until browned on top
Enjoy!
Brush the top of the bread with yolk mixture