Wash off the starch from a dough. The leftover is gluten, a network of protein formed when flour made of wheat, barley or rye is mixed with water. It is able to trap the air and carbon dioxide in bread.
Why gluten free?
1% of the population was born with celiac disease. Their immune system will mistakenly attack the small intestines as long as gluten is detected in the body. As a result, their body will suffer from digestive diseases and malnutrition.