White wine White wine White wine is a wine that is fermented without skin contact. The colour can be straw-yellow, yellow-green, or yellow-gold. It is produced by the alcoholic fermentation of the non-coloured pulp of grapes, which may have a skin of any colour. White wine has existed for at least 2500 years. The wide variety of white wines comes from the large number of varieties, methods of winemaking, and ratios of residual sugar. White wine is mainly from "white" grapes, which are green or yellow in colour, such as the Chardonnay, Sauvignon, and Riesling. Some white wine is also made from
Olmo grapes Olmo grapes Olmo grapes are wine and table grape varieties produced by University of California, Davis viticulturist Dr. Harold Olmo. Over the course of his nearly 50-year career, Dr. Olmo bred a wide variety of both grapes by means of both crossing varieties from the same species or creating hybrid grapes from cultivars of different "Vitis" species. Over 30 new grape varieties were created by Dr. Olmo and introduced to the California wine and table grape industries. Ruby Cabernet is the most notable and widely planted Olmo grape. It is a crossing between the "Vitis vinifera" varieties Cabernet Sauvignon and