Quinoa, chia, hemp, buckwheat, amaranth, teff, and millet are naturally gluten-free. However, when packaged, they may not always carry the “Gluten-Free” label because doing so requires special certification and processing. If a naturally gluten-free grain does not have the gluten label on it, that may only be because the producer has not obtained the necessary certifications. The gluten-free certification on packaging is the best way to know that your food is naturally gluten-free and that it was not contaminated during the harvest or processing stages. Einkorn is not gluten-free but has such a different type of gluten from modern wheat that many people with a range of gluten sensitivities can eat it without problems. We recommend speaking to a health care professional before trying it if you have celiac disease.