This is my go-to drink at my golf club, or in fact at almost any bar that's not a craft cocktail establishment. The ingredients are widely available, it is quick to describe to a bartender or server, and most any working bartender can make it easily just with the list of four ingredients: ruby red vodka, soda, splash of cranberry and a lime wedge. It is forgiving of proportions, and is quite refreshing on a hot day after outdoor activity.
2 oz Absolut Ruby Red grapefruit vodka
Splash (0.5 oz) of cranberry juice cocktail, or .25 oz unsweetened cranberry juice with .25 oz simple syrup
2-4 oz soda water
Lime wedge garnish
In an ice filled highball glass, combine vodka, cranberry juice or cranberry/simple combination, and soda water. Garnish with a lime wedge.