Prepare a highball glass full of ice then pour a single or double-shot of vodka (to taste). Add a nip of lime juice cordial (ensure it is juice based for a better cocktail). Carefully fill glass almost to the top with lemonade and slowly add a dash of grenadine (or alternately, raspberry juice cordial). If made carefully, the drink should create a three-tiered effect of a yellowy base, a clear centre and a red head.
As this is a sweet drink, sugar can be applied around the rim of the glass as well as a slice of lime for extra flair.

Lemonade can be substituted with Soda Water for those without such a sweet tooth.