You have two options with this, you can either let the gum steep for at least 24 hours, or you can cut the pieces in half and it would only need to sit for 12 hours. The longer you can let it sit the better so the vodka really soaks up all that bubble gum flavor. For this recipe I used Double Bubble.
8 oz vodka
8 pieces bubble gum (do not use sugar-free)
Combine the vodka and gum in a container with a lid and allow to sit for 12 – 24 hours.