In a bowl, add almonds, cashew nuts, fennel seeds, magaz, black pepper, pistachio, poppy seeds, green cardamoms, raisins, turmeric powder, 2 pinch saffron in a cup of warm water, and keep aside for 5-6 hours.
In a blender add the soaked mixture along with the water in it, add gulkand also. Blend to a fine smooth paste.
Soak 1 pinch saffron in 2 tbsp water.
Heat a deep bottom heavy pan, add the sugar along with 400 ml of water. Let it boil till the sugar dissolves, add the soaked saffron (after rubbing a little with fingers) along with the paste. Stir well and cook for 14-15 minutes.
Once cooked, let it cool to room temperature.
When the Thandai syrup cools down completely, pour the concentrate into a sterilized bottle.
It’s shelf life is around 2 months if kept in the refrigerator.
Now the Thandai concentrate is ready to make lots of glasses of Delicious Thandai.