Take 1 teaspoon of coffee powder in a bowl.
Add 2 tablespoons of warm water to it and stir. The coffee decoction is ready.
Now add 2 cups of chilled milk to a blender jar.
Add coffee decoction to it.
Also, add ¼ cup of sugar.
Further, add 1 teaspoon chocolate syrup.
Add 3-4 ice cubes.
Blend until smooth.
Decorate the glass by adding some chocolate syrup.
Lastly, pour the cold coffee into a glass and drizzle some chocolate syrup on top.