The word ice is usually used along with the word wine, as in ice wine (or eiswein). But ice can be used alone, as in “Riesling Ice.” A wine that is described simply as “ice” is made from grapes frozen artificially. By contrast, all ice wine globally must be made from grapes frozen naturally on the vine. Ice wine is usually expensive—often costing over $100 for a half bottle. By contrast, wines simply labeled ice can cost as little as $20 a half bottle.