How to use a liter of vodka

[WOXOF]

See, doesn't that make SO much more sense? 1 2/3 oz of booze, mixed with 1 2/3 oz of juice yields 3 1/3 oz of beverage, which is ... how many centiliters?

Is that Canadian ounces? I like my method, 1 part liquor / 3 or 4 ice cubes.