Add everything in blender, give it a mix and the sauce is ready. Season with salt and pepper.
for the salad
In a saucepan, boil 1-¼ cup of water with ½-tablespoon salt.
Once the water is boiled, drop the couscous, turn off the heat and cover the saucepan. Let it rest for 5 minutes.
Once done, fluff it with a fork and pour it in a salad bowl. Now, add chopped cucumber, mangoes and grapes. Feel free to add any other veggie or fruit of your choice. Pour the sauce and give it a good mix. Finally, add the roughly chopped cilantro and give another mix. Taste for salt and add any, if required.
Serve immediately or allow it to rest for couple hours for the flavor to blend better.