Add the sugar and boil till you get syrup of half-thread consistency. Once syrup is ready, remove from heat and allow to cool. The spice sediment will settle during this time.
Strain the spiced syrup into another bowl. Add the lemon and ginger juice to the syrup and mix well.
Pour into a bottle (use a funnel) and store in the refrigerator.
To serve, pour Lemon Ginger Squash into a tall glass, according to taste and add crushed ice and chilled water. Stir, garnish with a slice of lime/ lemon and serve!