Three key elements distinguish Stolichnaya from its imitators. First, it is distilled from superior winter wheat rather than lesser grains like corn. Second, it is made with only the purest, softest glacial water rather than processed water. Third, it is put through an elaborate, time-consuming double-distillation process that requires quartz and activated charcoal filtration.The result is a vodka of spectacular smoothness and clarity that outshines all others when served straight in the Russian tradition. It also mixes beautifully with juices, tonics and sodas.