Start by adding your ice cream to the jug of a high powered blender. Pour in the milk.
Then, add in 8-10 drops of green food coloring, as well as the mint extract. Blend until smooth.
Check the consistency, adding more ice cream if you would like a thicker milkshake, or some additional milk if you would like a thinner consistency.
Serve and enjoy with an optional dollop of whipped cream!
Dairy Free: Substitute the ice cream for a non-dairy vanilla ice cream, and use ½ cup of cashew or nut milk of your choice in place of the milk.
Extract: The best extract to use to make a copycat McDonald's Shamrock Shake is a general "mint" extract, which is a blend of various mint varieties. Peppermint will work in a pinch, but to get the best possible results, use the general mint extract instead.
Serving: 1g | Calories: 759kcal | Carbohydrates: 84g | Protein: 16g | Fat: 40g | Saturated Fat: 25g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 11g | Cholesterol: 160mg | Sodium: 310mg | Potassium: 841mg | Fiber: 2g | Sugar: 76g | Vitamin A: 1587IU | Vitamin C: 2mg | Calcium: 573mg | Iron: 0.3mg