Open and pour out some of the vodka in the bottle. Save this liquid for another day or drink.
Top up the bottle with some water, depending on how strong you want your drink.
Crush up your Werther's Original in a pestle and mortar.
Pour the crushed Werther’s into your vodka bottle and screw the lid on tight.
Put the bottle into your dishwasher for a 30min to 45 min cycle.
Once it’s finished, cool the bottle in the freezer and enjoy.