Kuranda Gluten Free Organic Amaranth. Amaranth is actually a seed! Like Quinoa, Amaranth is not technically a grain but is a seed of the Amaranth plant. Amaranth is also gluten-free and is a great choice for people suffering from coeliac disease and following a gluten free diet. The best news about Amaranth is that it contains Lysine which makes Amaranth a complete protein because it contains all the essential amino acids. It is also a great breakfast option and is known to keep you regular!