Organic pure porridge oats Amisa Pure Wholegrain Oats are reassuringly batch tested for gluten using the Elisa method. Whether enjoyed in a bowl of warming porridge, or in delicious bakes; these oats provide a great source of fibre. About oats Oats may have originated in the Fertile Crescent in the Near East. Domesticated oats were grown in Bronze Age Europe as they tolerate the cool wetter summers.