Finely chop onion. Halve cucumber vertically and slice.
Finely chop green chillies, mint leaves and coriander leaves.
Put all these in a big bowl. Halve eggs vertically and remove the yolks.
These yolks can be mixed with tomato ketchup and used as a sandwich spread. For this recipe we need only the whites.
Cut each half into 4 slices lengthways. Add salt, chaat masala, crushed roasted cumin seeds, mint and coriander chutney to the onions and mix.
Cut red capsicum into thin strips and halve them. Add eggs to the onion mixture.
Reserve some of the red capsicum for garnishing and add the rest.
Mix everything gently. Make a bed of lettuce on a serving platter, put the egg chaat over them.
Garnish with the reserved red capsicum and serve immediately.