In 1994 I was diagnosed with celiac disease, which led me to create Celiac.com in 1995. I created this site for a single purpose: To help as many people as possible with celiac disease get diagnosed so they can begin to live happy, healthy gluten-free lives. Celiac.com was the first site on the Internet dedicated solely to celiac disease. In 1998 I created The Gluten-Free Mall, Your Special Diet Superstore!, and I am the co-author of the book Cereal Killers, and founder and publisher of Journal of Gluten Sensitivity.
Blend rice flour, salt, and shortening in bowl. Set aside. In a small bowl, with mixer on low speed, gradually add potato flour to water--or use a small whisk. Pour the potato flour mixture over the rice flour mixture and work in with spoon. Then knead into a ball with as few strokes as possible. Either press across bottom and upside of your pan or roll between 2 pieces of wax paper that is dusted with rice flour. (I thought it worked better to pat it in the pan or between wax papers with fingers.) Flute edges and use for un-baked crust or bake and then fill with filling.