Thandai is North India's festival drink — cooling, aromatic, and deeply spiced in a way that feels completely different from hot chai even though it shares several of the same spices. Adding a base of brewed black tea brings a gentle tannin backbone that balances the richness of the nut paste and transforms it from a milk drink into something more complex.

This recipe makes enough for four glasses. It takes time — the soaking matters — but the actual hands-on work is minimal.

Method

Step 1: Brew and chill the tea

Bring 300ml of water to a boil. Add the tea leaves and steep for 4 minutes. Strain, sweeten with 1 tbsp of the sugar while still hot, and set aside to cool. Refrigerate until cold.

Step 2: Soak the nuts and spices

Place the almonds, cashews, melon seeds, fennel seeds, cardamom, white pepper, and dried rose petals in a bowl. Cover with cold water and soak for at least 2 hours — longer is better, overnight is ideal.

Step 3: Bloom the saffron

Add the saffron strands to 2 tbsp of warm (not hot) milk. Leave for 10 minutes. It should turn a deep amber gold.

Step 4: Make the paste

Drain the soaked nuts and spices. Blend with 4 tbsp of fresh milk and the remaining 2 tbsp of sugar until completely smooth. Pass through a fine sieve, pressing through as much of the paste as possible. Discard the solids.

Step 5: Combine

Mix the nut-spice paste with the remaining cold milk and the bloomed saffron (including the saffron milk). Add the cold brewed tea. Stir well, taste for sweetness.

Step 6: Serve

Fill four tall glasses with crushed ice. Pour the thandai chai over the ice. Garnish with chopped pistachios and a few dried rose petals.

Notes

The melon seeds (magaz) are what give thandai its characteristic silky body. Most Indian grocery stores stock them. Sunflower seeds are a passable substitute.
White pepper is traditional and correct here. Black pepper will work but is more assertive.
For adults: a small pour of thandai is traditionally spiked during Holi. This recipe is not that version, but it is built to accommodate it.

Serve very cold. Make extra. It goes quickly.