When I first started cooking for my son’s doctor-recommended gluten free diet, it was a challenge. There was no nearby Whole Foods – or any health food store – and I bought most of my ingredients online. I had a pantry full of sorghum flour, tapioca flour, xantham gum, guar gum, garfava bean flour, quinoa flour, amaranth flour, arrowroot flour, potato flour…and other ingredients that