Name a well-known region for producing ice wine.

Ontario, Canada is renowned for its production of ice wine, which has gained international acclaim. The unique climatic conditions in Ontario, particularly around regions like Niagara Peninsula, are essential for producing high-quality ice wine. This wine is made from grapes that have been naturally frozen on the vine, concentrating their sugars and flavors, resulting in a sweet, luscious dessert wine with complex flavors.

The choice of Ontario is significant because the region's winters allow for the necessary freezing temperatures, typically below -8 degrees Celsius (17.6 degrees Fahrenheit), which are ideal for ice wine production. Additionally, the predominant grape varieties used in Ontario for ice wine include Riesling and Vidal, both of which express vibrant fruit characteristics when made into this style of wine.

In contrast, other regions listed may produce various types of wines but do not have the same reputation or the specific conditions ideal for ice wine. For example, California is more famous for its diverse range of wines, including robust reds and balanced whites, rather than ice wine. New Zealand is celebrated for its Sauvignon Blanc and Pinot Noir. Champagne, France is synonymous with sparkling wine production. Each of these regions specializes in different wine styles, unlike Ontario, which is specifically known for ice wine.