Tomato, onion & cucumber raita

This easy, low-fat Indian yogurt dip makes a great side to cool down the spice of curry or tandoori chicken
Ingredients
    1 ripe tomato, chopped into 1cm dice
    ¼ red onion, finely chopped
    85g cucumbers, finely chopped
    a large handful chopped coriander
    1 tsp cumin seeds, toasted and coarsely ground
    450g plain yogurt, whisked until smooth
    sugar, to taste
Method
Stir together the tomato, red onion, cucumber, coriander, cumin seeds, plain yogurt, and a large pinch of sugar. Season to taste, adding more sugar if it is particularly sour.
Source: My Good Food