Pour lemon-lime soda into a pitcher and add 4-5 drops of red food coloring. Stir and add more if needed until it is bright red.
In the bottom of a glass add 1 tablespoon of grenadine and then fill with red soda.
Garnish glass with vampire teeth.
Recipe Notes
**I used mini mason jar glasses and the teeth fit perfectly inside the cup, but you could always freeze them in an ice cube mold and float the vampire teeth ice in the drink.