Germany is the leading producer of eiswein (icewine) in the world.
That would be Canada. Eventhough icewine represents just 5% of Canada’s wine production, the country makes more of it that anywhere else in the world. In Canada, as in Germany and Austria, icewine (or eiswein as it’s spelled in German) must be made from grapes frozen naturally on the vine and picked by hand, grape by grape. More than 95 percent of Canada’s icewine is made in Ontario.