Cucumber is very cooling and crunchy.
Cucumber - 1/2 no(Deseeded and chopped)
Plain curd/yogurt - 1 cup
Chaat Masala - 2 pinches
Red Chilli Powder - 2 pinches(As per your taste)
In a bowl, mix all the above ingredients and Serve.
Cucumber Raitha is a very good combination for Vegetable Pulav/Biryani.
Notes - Since chaat masala has salt in it, check and add salt if required.