Wrap yogurt in a cheese cloth, secure it well with a string. Hang it over night in the fridge. It might be difficult to hang in the fridge. I like to hang at room temperature for 2-4 hours depending on the season. Then place wrapped up yogurt in a flatten colander with a plate underneath to catch the water, while I place some weight on top of the yogurt wrapped in a cheese cloth. Place this setting in the refrigerator over night to get rid of as much water as possible.
10 minutes before making the shrikhand, soak saffron in warm milk for 10 min.
Once hung yogurt/curd is ready. Place it in a big bowl or a bowl of standing mixer.
Add saffron milk, powdered sugar and cardamom powder in the same bowl as hung yogurt/curd.
Mix everything very well into smooth consistency, until everything is very well blended with no lumps. This step is so much easier when you use standing mixer or hand mixer to blend everything into smooth consistency. While the traditional way is to mix it by hand and strain this thick mixture through a fine mesh strainer.
Once everythign is mixed well, add in slivered nuts, raisins and tutti frutti along with few strings of saffron. Mix well one more time and then refrigerate it for at-least 2-4 hours before serving.
Simply serve it with masala puri or just plain puri wand Surati Undhiyu!!