Gather milk, ice cream, and any flavorings or toppings you want
Add 2 cups of ice cream to a blender
Pour in 1/2 to 1 cup of milk
Add chocolate syrup, fruit, vanilla extract, or other mix-ins if desired
Blend until smooth
Add more milk if you want a thinner milkshake
Add more ice cream if you want a thicker milkshake
Pour into a glass
Top with whipped cream, sprinkles, or a cherry if desired
Serve immediately