Mix the milk, vanilla ice cream, and mint extract.
To give it that distinctive green colour, add a few drops of green food colouring.
Please blend the ice cream with the milk and mint flavour well by blending until it is smooth and creamy.
Pour the mixture into a tall glass, leaving room at the top for a generous dollop of whipped cream.
Cover with whipped cream, and add a cherry as a decoration.
Add toppings like crushed Oreos for a fun twist, making it an Oreo Shamrock Shake recipe.
If you want a little more mature taste, add Baileys Irish Cream to make it an alcoholic Shamrock Shake.
If you're looking for a less healthy version, you could always use low-fat ice cream, stevia instead of sugar, or even unsweetened almond milk to cut some sugar.
You can also throw in a scoop of protein powder to make this milkshake even more filling!