Just roughly chop the cucumber after peeling it. Also roughly slice the jalapeno.

To a blender, add freshly squeezed lemon juice

Then add the mint leaves and sliced jalapeno.

Followed by black salt, chopped cucumbers, and water. You can add ice cubes and sugar (optional) as well.

Blend it smooth.

Strain it if you want. Transfer this lemon cucumber mint water to a bowl and let it chill in the fridge.

Add ice cubes or crushed ice to a serving glass. Fill one-fourth of the glass with soda (if using) and then pour the chilled lemonade to fill up the glass.