I was surprised to find out that X has never heard of ice wine before. I suppose that's because there aren't any in France.
Ice wine is so named because this is wine that is made with grapes that have been frozen whilst still on the vine. Since the water content in the grapes are frozen, it produces a more concentrated wine & therefore sweeter. I've always associated Canada with ice wine but apparently Germany is a big producer too.
Generally served as a dessert wine. We enjoyed our bottle, courtesy of my sister in law, after a very hearty meal.