Wash and peel the skin of the raw mangoes and shred or grate them into fine strips. Peel the onion and cut it into the half, then finely slice them.
In a mixing bowl, combine the shredded mangoes, sliced onions, chopped green chilies, chopped coriander, and grated jaggery.
Now add red chili powder, ground black pepper, roasted cumin powder, and salt.
Toss and mix all the ingredients thoroughly and keep it aside for 30 minutes, covered in the fridge, to chill.
Mix again, as you will see juicy liquid from the mixture at the bottom, which will give the salad a perfect taste along with crunchiness.
The Keri Kanda Nu Kachumber is now ready to be served chilled as a side dish. Enjoy this refreshingly flavorful summer salad.