In order to cook Gluten Free it helps if you understand what gluten is.
Gluten is two proteins that are found in wheat and other related grains such as barley and rye. The proteins which are gliadin ( a prolamin protein) and glutenin (a glutelin protein) are found in the wheat endosperm or seed.
The proteins are not found in the grass itself which is why you could still have wheat grass juice if you were careful to never get the grain or seed in the juice.
Gluten when it gets wet becomes elastic and stretchy while still being strong.
Gluten's name came from the glue-like qualities it possesses.
When yeast is added the gases from the yeast are stopped by the gluten. This causes the dough to rise.
In essence gluten is what gives a light and fluffy feel to food. It is also what makes food chewy.
The amount of water added and the amount of stirring is what causes more elasticity and chewiness in the food. For instance a cake does not need as much elasticity as bread so less water and kneading would be done with a cake. A pie crust needs to flake and break apart fairly easy, so it needs even less water and stirring than cake.
Also it is important to understand that the wheat seed has starch in it and the starch helps ingredients bind together.
Now that you understand what gluten does you will be able to imitate it better in cooking.
In order to bind Gluten free flours most people use some sort of Gum product mixed with the flour such as guar gum or xanthum gum.
Starches are also used in conjuction with the gum product for the binding effect.
Another suggestion is to replace the protein that is in the gluten by using eggs for ½ cup of water or use part nut flour or bean flour.
To replace the Gluten flour most of us adore and can no longer eat. You need to have a combination of whole grain flour(s) (Rice, corn, millet etc.), A starch(s) (potato, tapioca, corn, etc.), A gum or binder (guar, xanthum, etc.). I hope this helps.
By Peggy Fehlman