Natural Sourdough Wheat Starter - cooking recipe

Ingredients

1/3 cup fresh orange juice, about 3 ounces
1/2 cup whole wheat flour, about 2 ounces
3 cups unbleached all-purpose flour, about 15 ounces
2 cups water, 16 ounces 75 deg F

Preparation

In a small bowl, combine the orange juice and whole wheat flour. Stir to blend well. The mixture will be a soft, sticky dough.
Scrape into a large plastic container of about 2 qt capacity. Let it stand, covered, for 12 to 24 hours. Bubbles will begin to form visibly on the surface of the dough.
Uncover the starter and add 1 cup of the all-purpose flour and 1 cup of water. Stir to combine. Cover, then let stand at room temperature, 70 deg F to 72 deg F, for about 12 hours or until bubbles form on the surface.
Uncover and discard half the mixture or give to a friend. Add 1/2 cup of all-purpose flour and 1/2 cup of water. Cover, then let stand at room temperature, as above, for about 12 hours, or until bubbles form on the surface of the starter. Transfer to a larger container, if necessary.
Feel the starter two more times, adding 1/2 cup all-purpose flour and 1/4 cup water with each feeding, and allowing the starter to ferment for 12 hours at room temperature between feedings.
Discard 1/3 of the mixture and feed one more time with 1/2 cup all-purpose flour and 1/4 cup water. After12 to 24 hours, the starter is ready to use.
Store the starter in the refrigerator. Feed it every four to five days with 1/2 cup flour and 1/4 cup water. If you like, at every fifth feeding, discard 1/2 cup of the starter and feed with whole wheat flour instead.
Maintain by feeding at least once a week, removing it from the refrigerator and adding 1/2 cup water and 1 cup of all-purpose flour (I would be discarding half of it or so, as if you do not bake enough, you will have a gallon of starter before you know it).
Let it sit at room temperature for 2 to 4 hours before using.