Gather all your ingredients.
In a blender, combine the chocolate ice cream and milk.
Add the chocolate syrup to the blender.
Blend on medium speed until smooth and creamy.
Check the consistency; add more milk if too thick.
Pour the milkshake into tall glasses.
Top each milkshake with whipped cream.
Drizzle additional chocolate syrup over the whipped cream.
Sprinkle chocolate shavings on top for garnish.
Serve immediately with a straw and enjoy!