In a pan add water and sugar together.
Switch on the gas stove, heat water and sugar mixture.
When the mixture just let it boil for 1-2 mins. then add basil leaves.
Let it boil for another 1 minute.
Switch off the flame and let the flavor of basil leaves infuse in water sugar mixture.
Once the mixture cools down, blend the mixture. This is optional.
You can skip this step and directly strain the mixture.
Strain the mixture after blending.
Store it in an air-tight glass bottle or jar, use as required.