The grapes used to produce ice wine are frozen whilst still on the vine which means that whilst the water inside the grape freezes, the natural sugars do not, creating the concentrated, sweet flavour that makes ice wine so delicious. Ontario, has the perfect climate for creating this dessert wine and is also the birthplace of the sparkling version, created accidently in 1988. head to the Hillebrand Winery in Niagara-on-the-Lake where you can sample these revered vintages.