Highlights Naturally frozen on the vine, grapes destined for Icewine production are painstakingly hand harvested at temperatures of -8°C or colder. As the frozen grapes are pressed, only a few precious drops of concentrated juice are obtained. At Mission Hill Family Estate, Icewine isn’t made every year. We wait for Mother Nature’s blessing. Under the watchful eye of winemaker John Simes, the grapes are harvested and turned into a delicately balanced, aromatic wine. Technically challenging, time consuming and very risky, Icewine is truly an art and is considered to be a delicacy.