I do know that challah is a kind of braided bread...but no more than that!
Challah is a braided yeast bread that is generally made the day before the Jewish Sabbath. It is really good! I make it with honey instead of sugar. There are many recipes, however I use this one (in a bread machine).
2 pkg. yeast
1 3/4 c. water
2/3 c. oil
1 egg
1/2 c. sugar or honey
1/2 tsp. salt
3 c. flour (all-purpose)
Mix together above ingredients. Then add 3 cups additional
flour. Turn out on floured surface. Let rise for 1 hour or
until double in bulk. Punch it down.
For Kashrut only: Take "Challah", put in oven. Shape into 2
loaves or place in loaf pans. Let rise an hour. Brush with
egg and water. Bake at 350 degrees for an hour. Cool on
wire racks.