A.J.'s Special Gluten-Free Baking Mix (Gluten-Free)

This recipe comes to us from Cory Bates.
The formulation is as follows:
White Rice Flour 32%
Brown Rice Flour 32%
Potato Starch (not pot. flour) 15%
Tapioca Flour 12%
Corn Starch 6%
Xanthan Gum 3%
For a general guideline of how to mix the flour, the following recipe can be followed. Yields 2 - 2.5 lbs. of flour mix.
Brown Rice Flour 2 ½ Cups
White Rice Flour 2 Cups
Corn Starch ½ Cup
Potato Starch ¾ cup + 2 Tablespoons
Tapioca Flour or Starch ¾ cup + 2 Tablespoons
Xanthan gum 3 Tablespoons

1 cup brown rice flour
1 ¼ cup white rice flour
¼ cup potato starch
2/3 cup tapioca starch
¾ cup sweet rice flour
1/3 cup arrowroot starch
2 teaspoon xanthan gum
Sift together twice and mix well. Can be used 1:1 for all purpose wheat flour. Additional xanthan gum may be needed in some recipes.

2 cups brown rice flour
1 cup tapioca starch
½ cup bean flour or sorghum flour

This recipe comes to us from Maria Oostveen. Her comments about it: My goal is to develop an all-purpose flour, that can be used for most baking purposes. I have not tested this version yet on anything else but bread and it compares 100% with regular light wheat bread. The first thing I made with it was the cheese sandwich I so badly craved and it was like heaven!! No comparison with ANY gluten-free bread I tried before, and I tried them all!!!!!!
Marias Bread Flour Mix (makes 9 cups = 3 loaves).
2 cups garfava or garbanzo-bean flour
1 cup sorghum flour
2 ¼ cups tapioca flour
2 ¼ cups arrowroot flour (starch)
1 cup rice flour
1 tablespoon potato starch
2 tablespoons potato flour
2 tablespoons xanthan gum
2 packages gelatin (unflavored)
¼ cup su...