Wheat and gluten free food fact file
Why might you need xanthan gum or guar gum? Which type of soy sauce is safe?
This food fact file might help you to understand some of the more unusual ingredients used in a wheat free or gluten free diet, and also includes some of the interesting facts associated with foods such as cranberries or bananas.

Baking soda
When you need a leavening agent this is what you use, plus for many other household uses