Step 1: 1. Take a pot and mix water and milk in it and heat it.
Step 2: 2. Stir continuously till it starts boiling. Lower the heat.
Step 3: 3. Take nutella in spoon and keep stirring it in the boiled milk and water at low flame till it mixes properly. (This might take a while)
Step 4: 4. Now stir the the syrup.
Step 5: 5. Add whipped crean if you want.