Tie up the yogurt in a muslin cloth and hang, preferably in the refrigerator, till most of the water drains away. Mix together yogurt, sugar and icecream.
Keep aside two tablespoons of the chopped strawberries and add the rest to the yogurt mixture and blend in a mixer.
Spoon into individual bowls and chill.
Sprinkle the remaining strawberries on the top and serve.