Boil water with sugar and add grapes to it. Boil till the skin of the grapes gets cracked. Strain the water and keep aside.Transfer the blanched grapes in ice water immediately to keep the colour intact.De-skin the grapes and keep the skin aside. Refrigerate the pulp for at least an hour.

Now, boil the grape skin in grape water (that was kept aside) on medium to low flame for at least 15 minutes.Strain the water and refrigerate till the juice turns chilled.Now, mix the pulp and juice and serve.