Whole Wheat Challah, No Knead

Ingredients

• 1kg white flour (7-1/3 cups)
• 1kg whole wheat flour (I prefer to use whole wheat pastry flour, but you can substitute regular whole wheat flour or even another kilo of white flour) (7-1/3 cups)
• 2 cubes of fresh yeast (1 cube per kilo)
• 1 cup oil
• 1 cup water
• 1 cup plus 1 tsp. sugar
• 1/8 cup salt
• 4-1/2 cups plus 1 cup warm water