Step 1: Roll out dough into 3 strand
Step 2: Braid the challah like any other 3 strand challah
Step 3: Bend the braid into a circle. Make sure you leave a large enough hole in the center of the challah. We did this braid twice and didn't leave a big enough hole the second time so after the dough rose there was no longer a hole (see photos below)
Step 4: Attach the open strands
Step 5: Let it rise in a warm place for 30 minutes then baste it with an egg wash
Step 6: Bake at 350 for about 18 minutes or until the internal temperature is around 170 you may want to place aluminum foil on top of the challah after about 10 minutes or so. That way you can keep the top from getting to be too brown.