Take a mixer jar and grind the biscuits into fine powder. Add chilled milk in the jar.
Now add sugar, ice cream and ice cubes in it. Blend all the ingredients.
Pour chocolate syrup on the sides of the glass/tumbler.
Now put 1 scoop of ice cream (optional) in a glass.
Now pour the milkshake into the glass.
Your Oreo Milkshake is ready to be served. Garnish it with in silver balls, cherry and tuti fruty and serve chilled.