Although they originated in Germany's beautiful Rhine Valley, the Riesling grape soon spread around the world, where it thrives in many countries with a colder climate which can support this pale and unique grapes. Riesling grapes are considered one of the finest varietals on earth, capable of expressing fascinating features of the soil type they are grown on, resulting in some highly interesting wines with plenty to offer those who are looking for something different. Riesling grapes are also noted for their aromas, which tend to be highly perfumed, floral and often with smoky notes accentuating their unusual flavor Because this was always the predominant grape grown in Germany and other such countries, Riesling wineries have always been keen to experiment with its range. This has resulted in dry white wines, sparkling wines, semi sweet wines and several others, but the finest examples are usually considered to be the Riesling dessert wines. These are occasionally made with unusual processes, including the 'eiswine' method, in which the grapes are allowed to freeze in the early frosts, or by allowing the development of 'noble rot', which withers the grapes and results in some truly spectacular and unusual flavors.