A refined grain, or its product, is made by processing a natural whole grain so that some of its nutrients are lost. Flours, breads, cereals, noodles, pastries—almost all grain products have been refined in some way or another. | A refined grain, or its product, is made by processing a natural whole grain so that some of its nutrients are lost. Flours, breads, cereals, noodles, pastries—almost all grain products have been refined in some way or another. |