Add ice to the highball glass so that it fills it to the top.
Grab the vodka and measure up 2 oz with the jigger. Add the vodka to the glass.
Grab the grenadine and measure up 1 oz with the jigger. Add the grenadine to the glass.
Grab the sprite and measure up 4 oz with the jigger. Add the sprite to the glass.note: if desired, instead of measuring the sprite you can pour it directly into the glass.
If desired, add a maraschino cherry on top of the drink.