Sweet, Sour and Spicy tomato chutney is a great accompaniment to various snacks and chaat items when paired with green chutney.
You can substitute dates for sugar as a natural sweetener.
In case the tomatoes are not tangy enough, use a teaspoon of lemon juice at the end.
Adjust spice levels with green chilli to suit your taste.
You can substitute red chilli flakes for green chillies, though I prefer green chillies.
Adjust sugar quantity to suit your taste.