Take ripple black graps remove steam and wash throughly
Add graps in boiling water upto it cooked keep and mash it well
Strain the grap extract keep aside
Take suger,citric acid and water stir upto suger bubble up
Make suger syrup to cool. thenadd greap syrup ,and grape essance mix well
Then take sodium benzoate dissolve in water add to squash mix well
Transfer it in to Strelized bottle store in Fridge.
Take 1/3 squash and remaining glass water mix well and serve chill.