“…Archaeobotanical studies of grain tissues have already successfully contributed to the knowledge of the ingredients and processes involved in the production of cereal-based foodstuffs, not only of entire "loaves" [58,66,122] but also of small fragments [75,79,80,82,123,124]. These studies have demonstrated that patches of aleurone tissue are not only still recognizable in charred fragments of ground food preservations from archaeological contexts (Fig 4), but the aleurone tissue's structure [86,87] has also successfully been used for the differentiation of barley (Hordeum vulgare) from other Old World cereals and grasses [58,66,80,82,122,125,126].…”