Tub tim grob (red rubies)Water chestnut in coconut milk
On a sticky afternoon in Bangkok, from the food courts of Siam to roadside dessert carts, this is the bowl people order to cool down. Each 'ruby' is a cube of water chestnut wrapped in a chewy, glassy coat of tapioca, so you get crunch inside slipperiness, all floating in jasmine-scented syrup and salted coconut milk with shaved ice. Some shops add jackfruit strips. Chef's tip: shake off excess starch before boiling; a thick coating turns into a gluey lump instead of a thin, see-through skin.



