In a mixing bowl, add yogurt and whisk until smooth.
Add sugar, cumin powder, salt and red chilli powder and whisk until well combined.
Add the finely chopped pineapple pieces and chopped coriander leaves to the yogurt.
Mix well and chill the raita for some time.
Serve with pulao or paratha.
Video
Notes
Do not let the raita sit too long. It may turn bitter.You can use canned pineapple if you don't find fresh.Adjust the spices according to your taste.Use thick and fresh yogurt only.