Take yogurt in a muslin cloth or any thin kitchen cotton cloth lined on a strainer .
Keep the strainer on top of a deep bottom vessel so that all the liquid (whey) drains off.
Get the opposite ends together to make a knot by tying one edge around the rest.
Gently press and you will see the water(Whey) dripping down.Keep something heavy on top over night or for 4-5 hours.
Next day, untie the knot and remove the dry yogurt in a bowl.
In the mean time, soak saffron strands in the warm 1/2 tablespoon milk for 10 minutes.Loosen The yogurt with a fork.
Add sugar, saffron milk and cardamom powder and mix well till it becomes smooth and creamy.
Sprinkle some saffron strands on shrikhand for garnishing.
Enjoy this sweet Yogurt dip with Poori or chapati.