I am interested in trying Dandy Blend coffee substitute. However it is made out of barley & rye. They claim it is gluten free. But I'm still nervous about it. Has anyone tried this product or done any research about it? Here is what they claim on the Dandy Blend website: Dandy Blend is made of the water-soluble extracts of five ingredients--three roots and two grains. The ingredients are roasted separately and them combined in prescribed proportions, placed into a vat, covered with hot water, and allowed to steep for a prescribed period of time. The water, with the soluble portions of all the components, is separated from the grounds and spray dried. The remaining fine brown powder left after the water is driven off is what becomes Dandy Blend. All the gluten and other water-insoluble substances are left behind in the grounds to be composted. Hence, there is no gluten in Dandy Blend. Goosefoot Acres periodically submits samples of Dandy Blend to Elisa Technologies Laboratory in Florida, one of the most respected gluten testing labs in the United States for analysis, and so far, every test has come back gluten-free.