First cut the limes into quartz.
Now squeeze the juice minus the seed with the help of a squeezer or by using your palm.
Now gently add some water and sugar powdered into the lime juice.
Give it a good mix and keep stirring until sugar dissolves.
Add cumin powder and black salt, give a good mix, now keep this lime mixture aside.
Take ΒΌ of lime syrup and pour half a glass of soda/sprite/sparkling water.
If you are using limca except of soda then use less of lime sugar syrup, as limca or lemon are already contain sweet.
Now add ice cubes along with mint leaves and lemon slices if using.
Now garnish the glass with some cut mint leaves as well and serve the fresh virgin mojito chilled.