I see Kachumber as Indian salsa, it is quick, full of flavors and healthy. It can be served with roti, parantha, chila etc. or can be taken as quick snack.
All you need for this is
1tbsp tomato chili sauce
2 tbsp finely chopped capsicum
2tbsp finely chopped tomato
2tbsp finely chopped papaya
2tbsp finely chopped onion
fresh coriander leaves to garnish
Just add all the ingredients; add salt if you like to and serve .
Their is no hard and fast rule of ingredients for Kachumber. At our village they add lots of green leafy vegetables to it as well. But I am not the one who can eat them uncooked so I avoid them. You can add fruits, lime juice, jaggery as well according to your taste.