Soak the saffron in warm water, after a few minutes of soaking grind to a smooth paste.
Put the sugar in a pan with milk on high heat. Alternatively you can use water too. Boil till the sugar dissolves and forms a syrup of one thread consistency. ( Test check - hold a drop of cooled syrup between your thumb and fore finger and gently pull them apart : a thread should be formed. )
Reduce the heat , add khoya. Stir till well blended.
Now add cardamom powder and dissolved saffron . Mix well.
Add the unsalted sev and keep stirring till the mixture leaves sides of the pan.
Remove from heat , and mix in the rose water.
Spread the mix on a greased tray.
Level the mix , garnish with almonds , pistachios, rose petals.
Set aside for a minute 30 minutes or till it reaches room temperature.
Cut into pieces and store in a airtight container.