Cooked noodle thickness, while also being significantly influenced only by flour type, displayed a different pattern than would be anticipated from the amount of water uptake only (Fig. 2b). In all cases cooked dark flour noodles were thicker than either cooked white flour or whole groat noodles. These results again point to a different mechanism of water imbibition by starch versus insoluble fibre particles. With the exception of the cultivar BR06, no differences in noodle thickness were observed between white or whole groat noodles.