Abstract: A process of preparing a starch hydrolysate from wheat, barley or rye comprising the steps of contacting kernels of wheat, barley or rye with an aqueous solution to hydrate and soften the kernels, gently wet-milling the hydrated and softened kernels, separating fibres and pentosans attached thereto as well as germs and gluten from the wet-milled product to form a starch-containing slurry essentially free of insoluble pentosans, carefully washing the fraction to form a refined, starch-containing product, hydrolysing the refined product to form a starch hydrolysate and finally refining the hydrolysate.