Just wanted to mention this while it's on my mind . I know a lot of people have health reasons to avoid products with gluten and Madrid has a smallish but pretty well stocked shop with gluten free products .. It's called " Mana - Sin Gluten " and is in Calle de Lanuza ( underneath my apartment ) . I don't have a problem with gluten products and , by the way , do NOT know the owner ( this is not advertising ) .
I think it's just a great shop tucked away out of the centre for those that need that sort of product