Grind 50 gms of cleaned, fresh ginger to a rough paste or small pieces. Boil 2 bottles of water , after the water starts bubbling add the ground ginger. Add the sugar. Boil on high flame for two minutes and switch off. Strain the ginger juice through a fine muslin. Cool and then pour into another larger vessel, being carful not to pour to the end. Thus the sediment and impurities remain to be thrown away. Strain once more and add in the rest of the juices and strawberry pulp. This concentrate must be refrigerated and can be blended with iced water or soda to make an incredible summer drink at short notice.