To start preparing the peppermint patty martini, grab a cocktail shaker and add in one cup of ice cubes or crushed ice.
Next, pour 30 ml of vodka, 30 ml of white crème de menthe, 30 ml of dark crème de cacao and 60 ml of half-and-half into the cocktail shaker loaded with ice.
Now, screw the lid of the cocktail shaker on tightly, to prevent the drink from splashing out, and give it a couple of vigorous shakes, in order to make sure all the ingredients have blended together thoroughly.
Then, hold a strainer over the martini glasses, and pour the peppermint patty martini into these – make sure no shards of ice make their way into your martini.
As a final touch, garnish the glasses by hanging mini candy canes from the rims. Serve straight up and chilled.