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Dry and refreshing with a pleasant minerality.
The proportion of soda water to vodka in this recipe is 2.5 to 1 (a ratio that appears to have the widest appeal) consisting of one 150 ml can of soda water to 60 ml vodka = 210ml plus ice melt total liquid in glass. If using a 12oz glass (350ml to fill level) the ice displacement = approximately 140ml, so ice forms 40% of contents of glass. To raise the percentage of ice to the ideal of around 50% you should use a 14oz Collins glass or a Spanish style Copa glass.