Purple Sweet Potato Steamed Cake (Huat Kueh) 紫薯蒸发糕

by Angie Liew
How To Make Purple Sweet Potato Steamed Cake | Huat Kueh Recipe (Apam Kukus) 紫薯蒸发糕食谱 | Huang Kitchen
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Amazing Huat Kueh Recipe. Purple Sweet Potato Steamed Cake: Soft, Spongy and So Delicious.

These lovely Purple Sweet Potato Steamed Cake are literally prosperity cakes or better known as Huat Kueh or Apam Kukus, with striking purple hues from the purple sweet potato. Yes, these steamed cakes look so good and taste even better in purple! These cakes are soft, dense and spongy in texture. The best part is biting into the small bits of mashed sweet potatoes in this purple sweet potato steamed cake which have a rich, almost winey flavour with a creamy texture. 


Purple Sweet Potato Steamed Cake | Huat Kueh Recipe (Apam Kukus) Huang Kitchen- On Plate

Beautiful Steamed Cakes With Signature Split Open Top

Another characteristic of this lovely steamed cake is the cake has a split open top. When steamed, these Purple Sweet Potato Steamed Cakes rise and crack beautifully on the top, making them look so fluffy, soft and light. Cracking also signifies joy, happiness and prosperity. Hence, these steamed cakes can also be served for any happy occasions such as Chinese New Year or birthday celebrations. 

 

Purple Sweet Potato Steamed Cake | Huat Kueh Recipe (Apam Kukus) Huang Kitchen- Stacked

Easy To Make With Simple Ingredients

Purple Sweet Potato Steamed Cake is extremely easy to make using simple ingredients as well. To start with, make sure you have in hand the purple sweet potatoes. Otherwise the steamed cakes will not come out purple in colour. First, prepare the purple sweet potato paste. To do this, steam the sweet potatoes till cooked and mashed into a paste while it’s still hot. Then prepare the cake batter.

This is done by first mixing together the dry ingredients namely the flour, salt, sugar and yeast. Then add in the wet ingredients, namely the coconut milk or milk, water and vegetable oil. Stir till a smooth batter is formed. When done, divide the batter into two portions and mix mashed potato paste into one of them. Leave aside to proof for 1 hour.

 

Huat Kueh Success: The Key To Crackling Top

When about to steam the cakes, prepare the steamer ahead of time by bringing the water in the steamer to a rapid boil. Once the dough has risen, remove the cling wrap and give the batter a good stir before spooning the batter into the lined steaming cups. Then quickly put into the steamer to steam over high heat. And we’re done! 

 

These Steamed Cakes Make A Great Snack Anytime

These Purple Sweet Potato Steamed Cakes are lightly sweetened yet it’s packed with great flavour from the coconut milk or fresh milk and unique purple sweet potato aroma. It’s gorgeous looking and they make yummy snack or dessert anytime of the day. So Enjoy!

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Purple Sweet Potato Steamed Cake (Huat Kueh) 紫薯蒸发糕

Recipe by Huang Kitchen, Angie Liew
These Purple Sweet Potato Steamed Cake looks so good and tastes even better. These type of steamed cakes are also known as prosperity cake, huat kueh or apam kukus. Soft, spongy, rich and filled with goodness of purple sweet potato. Simply delicious!
Prep Time30 mins
Cook Time15 mins
1 hr
Course: Appetizer, Desserts, Snack
Cuisine: Asian, Chinese
Keyword: cake, huat kueh, purple sweet potato, steamed
Servings: 4 steamed cake

Ingredients

Ingredients:

  • 120 grams all-purpose flour, sieved
  • 1/4 tsp salt
  • 80 grams sugar
  • 1/4 tsp yeast
  • 80 grams fresh milk, can also use coconut milk
  • 80 grams water
  • 25 grams vegetable oil
  • 50 grams purple sweet potato, steamed and mashed

    Instructions

    Preparing Batter:

    • Cut potatoes into smaller pieces.
      Cut purple sweet potato into small pieces.
    • Steam purple sweet potato
      Bring water to a boil and steam the purple sweet potato for 20 mins till cooked.
    • Mash steamed potatoes into paste.
      Mash into a paste and set aside.
    • Add sieved flour, salt, sugar and yeast
      In a large bowl, add in sieved flour, salt, sugar and yeast. Mix everything together.
    • Then add milk, water and vegetable oil.
    • Stir well till you get a smooth batter.
    • Set aside 100g batter.
      Set aside 100g batter.
    • Add in mashed purple sweet potato.
      Add in 50g mashed purple sweet potato and mix well.
    • Cover with cling wrap and proof 1 hour.
      Cover both batter with cling wrap and set aside to proof for 1 hour.

    Steam Purple Sweet Potato Cake:

    • Bring water to a rapid boil.
      To steam the cake, first prepare steamer by bringing water to a rapid boil.
    • Place steaming cups into a steamer and line with paper liners. (Diameter: 7.5cm)
    • Place batter into steaming cups.
      Using an ice-cream scoop, first spoon original batter followed by the purple sweet potato batter into each of the prepared steaming cups.
    • Smoothen the top with a spatula
      Smoothen the top with a spatula. And we are ready to steam the purple sweet potato cakes.
    • Place in steamer and steam 15 minutes over high heat.
      Place the steaming cups into the prepared steamer and steam over high heat for 15 minutes.
    • Remove steamed cakes to cool on rack.
      Then remove steamed cakes and allow to cool on wire rack.
    • Purple Sweet Potato Steamed Cake
      The purple sweet potato steamed cakes are ready to be served. So Enjoy!

Enjoy!

Recipe Video

Notes

  • Be sure the mash the steamed purple sweet potatoes while it’s still hot.
  • After the batter has risen, you need to still the batter to mix it well before spooning into the lined steaming cups.
  • To make sure the cake has a beautiful crack on the top, you need to fill the batter to full or almost full. Also, make sure the steamer is hot and ready before you fill the lined steaming cups so you can steam immediately. Do not leave the batter in the steaming cups to wait for the steamer to be ready. 
  • Do not open the cover of the steamer during steaming. Otherwise the cakes may not rise. 
  • Use high heat when steaming.
  • These steamed cakes can be kept frozen as well. Simply remove from freezer the night before and steam for 15 minutes and they will be soft and fluffy again.

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