Centennial (PVP, patent expired) (Gold x Q25-6). Bred by H. P. Olmo at the University of California at Davis. An excellent white grape that is firm, crisp, with mild muscat flavor, and some of the largest berries of any seedless grape. This variety should have been a winner. However, the clusters have a mix of berries of varying sizes, and the stems don't stay green in shipping, two things that destroyed it for commercial sales. An excellent raisin variety, with very large raisins that could be a specialty item, but commercial users want small raisins for baking and processing. Skin is tender and may crack if weather is rainy when the fruit is ripe. Mostly a home variety. Extremely vigorous, with the vine capable of attaining great size. Prune to canes.