To prepare sugar syrup, take water, sugar, rose essences, saffron threads, cardamom powder and lemon juice in a deep pan. Boil it at medium heat till the syrup gets one thread consistency. ( to check one thread consistency, dip spatula in sugar syrup, take some syrup on your index finger from spatula, stick your thumb on your index finger and slowly pull it out. You should see that one thread is getting formed between your index finger and thumb). Turn off the heat once it done and keep it aside.