(Reuters) - In the Ontario town of Beamsville, about 40 kilometres (25 miles) west of Niagara Falls, a small crowd of bundled-up figures crouched in a moonlit vineyard on a frigid January night, picking a crop of hard-frozen Gewurztraminer grapes. With stars shining overhead and ice crystals glittering in the air, the temperature had dropped to minus 10 Celsius, or 14 Fahrenheit. Conditions were nearly perfect to harvest fruit for this year's ice wine, a Canadian speciality.