Destination
Krabi
The story
Thapthim krop ("crunchy pomegranate seeds") is one of Thailand's most-photographed cold desserts and a Bangkok summertime classic: cubes of fresh water chestnut are coated in bright red-dyed tapioca starch and boiled briefly until the coating turns glassy translucent, revealing the crunchy white water chestnut inside — the result looks exactly like pomegranate seeds or rubies (thapthim). Served over shaved ice with sweetened coconut milk (or coconut cream + palm sugar), jackfruit strips, water chestnut cubes and a scoop of syrup. Sold at every Thai dessert shop and specifically Bangkok cold-dessert counters.
Method
Peel fresh water chestnuts. Dice into 5mm cubes.
In a shallow bowl, combine red food colouring and 3 tbsp water. Toss the diced water chestnuts in the coloured water. Let sit 2 minutes so they turn pink-red.
Lift water chestnuts from the colour, letting excess drip off. Toss in tapioca starch in a wide bowl, coating each cube in a thick layer.
Bring a large pot of water to a boil. Add the coated water chestnuts (a slotted spoon works). Boil 2 minutes until the coating turns from opaque to glassy translucent, revealing the red water chestnut inside.
Immediately transfer the boiled water chestnuts to a bowl of iced water. This stops cooking and firms up the coating.
In a saucepan, warm coconut cream, palm sugar, salt and pandan until sugar dissolves. Do not boil. Cool.
In tall glasses or wide dessert bowls: layer shaved ice, thapthim rubies, jackfruit strips and a generous drizzle of sweet coconut sauce.
Garnish with mint leaves. Serve immediately with a long spoon.
Tips
- Fresh water chestnuts for crunch. Tinned works but the crunch is less.
- Boil briefly. Two minutes is enough — the coating just needs to turn translucent.
- Ice bath is essential. Stops cooking and sets the coating.
- Serve very cold. This is a cold summer dessert.
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