Wednesday, August 28, 2024

How to Make Thai Red Rubies with Coconut Milk

red rubies, coconut milk and sugar syrup in separate containers, and all three in a serving bowl, Thai Red Rubies with Coconut Milk Dessert.
Looking for the best Thai dessert to make at home? It has to be Thai Red Rubies with Coconut Milk, also known as Tub Tim Grob in Thai. This popular dessert is refreshing, chewy, and coconut-creamy, perfect for hot days.

Red Rubies are water chestnuts (or turnips as a substitute) coated in tapioca flour, boiled until translucent, and served in sweetened coconut milk, often with a touch of pandan (screwpine) leaves for fragrance, just like in many Malaysian desserts.

Making this Thai dessert isn't difficult. The key is getting the red rubies just right, chewy on the outside and crunchy inside, while the rest is as simple as coconut milk, sugar, and pandan aroma.

 

Tips Before Making Thai Red Rubies at Home

Can’t find water chestnuts? Use turnip - it works just as well!

After boiling, immediately place the red rubies in ice-cold water to stop the cooking and keep the tapioca coating intact.

Soaking in ice water keeps them chewy, glossy, and prevents sticking.

You can store them in cold water in the fridge for up to 4 hours before serving.

Prefer to adjust sweetness? Serve the coconut milk and syrup separately, so everyone can mix to their taste.

 

Whether you enjoy Thai red rubies with coconut milk chilled with ice or served at room temperature, it’s a classic dessert that never fails to please.

 

Ingredients

For the Red Rubies

1 medium-sized turnip or 10 water chestnuts, peeled and cubed

A few drops of red food coloring

½ cup tapioca flour

 

Method for Red Rubies

Soak the turnip or water chestnut cubes in water with red coloring for 20 minutes.

Strain and set aside.

Place the tapioca flour and the red-colored cubes into a zip lock bag.

Shake well until the cubes are evenly coated with flour.

Cubed chestnuts soaking in vibrant red water, creating a visually striking contrast

Coating cubed chestnuts with tapioca flour in a zip-lock bag for an even texture

Red-coated cubed chestnuts, coated with tapioca flour, in a plastic blue container

Drop the coated cubes into boiling water.

Simmer until the coating turns translucent.

Scoop out the red rubies and immediately plunge them into ice-cold water.

Red rubies cooking in boiling water, gently simmering in a pan

Cooked tapioca flour-coated red rubies chilling in ice water with ice cubes

For the Coconut Milk

200 ml thick coconut milk

A pinch of salt
Simmer gently to warm through. Do not boil.

 

For the Sugar Syrup

150 g sugar (or to taste)

500 ml water

3 pandan (screwpine) leaves
Simmer until slightly thickened into a syrup.

 

To Serve

Place red rubies in a serving bowl. Add coconut milk and drizzle sugar syrup atop.

Red rubies, coconut milk and sugar syrup in a serving bowl, Thai Red Rubies with Coconut Milk Dessert.

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