Add ice to your cocktail shaker

Measure and pour 2 oz vodka of your choice

Followed by  1oz Sweet and Sour mix

And finally, 1/2 oz Grenadine and 1/2 Maraschino cherry juice

Secure the lid to the cocktail shaker Shake vigorously for 30 seconds or until fully chilled

Strain into your martini glass and top with a splash of Cherry 7-Up soda