Here are 2 ways to make beautiful, delicious, and soft purple sweet potato sponge cakes and bamboo root sponge cakes with an unbeatable mixing formula, guaranteed to succeed. Let’s get cooking right away with this cake recipe together with TasteVN!
1. Purple Sweet Potato Bamboo Root Cake
Preparation
20 minutes
Cooking
1 hour
Difficulty
Easy
Ingredients for Purple Sweet Potato Bamboo Root Cake Serves 6
Tapioca flour 206 gr Rice flour 9 gr Vanilla powder 10 gr Baking powder 1 tablespoon (about 14gr) Purple sweet potato extract 1 teaspoon Chicken eggs 7 eggs Coconut oil 30 ml Coconut milk 400 ml Sugar 245 gr Salt 1 teaspoon
How to make Purple Yam Tre Root Cake
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Mix the egg and sugar mixture
Add 400ml of coconut milk, 245gr of sugar, 10gr of vanilla powder, and 7 chicken eggs into a bowl. Use a whisk to gently stir in one direction for about 15 seconds.
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Mix the flour
Next, add 1 teaspoon of purple yam essence, 206gr of tapioca flour, 9gr of rice flour, 1 tablespoon of baking powder, and 1 teaspoon of salt.
Continue to use the whisk to gently stir until the flour mixture is well combined. Then, strain the mixture through a sieve for smoothness.
Finally, add 30ml of coconut oil and stir again to complete.
Tip: Do not whisk too vigorously as it will create large air bubbles, making the cake look unappealing after baking. -
Pouring and Baking
First, place the baking mold in the oven and preheat it at 200 degrees Celsius for 15 minutes to stabilize the oven temperature.
After 15 minutes, evenly brush a layer of cooking oil and pour the batter into the mold. Next, place the mold in the middle of the oven and bake for 55 minutes at a temperature of 190 degrees Celsius (380 degrees Fahrenheit).
Once the cake is done, let it sit in the oven for about 5 more minutes before taking it out.
Note:- If within the first 10 minutes of baking, the cake rises too high above the mold, it indicates that you have overmixed the batter or the oven temperature is too hot.
- If you have an air fryer, bake the cake for 55 minutes at a temperature of 163 degrees Celsius.
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Final Product
The purple sweet potato cake, when cut, is very visually appealing, with a fragrant, soft, chewy texture, and plenty of bamboo roots. When eaten, you will feel the rich sweetness from the coconut milk, with a unique taste from the purple sweet potato, extremely delicious.
2. Purple Sweet Potato Fluffy Cake
Preparation
45 minutes
Processing
30 minutes
Difficulty
Easy
Ingredients for Purple Sweet Potato Steamed Cake For 15 pieces
Purple sweet potato 150 gr Tapioca flour 30 gr All-purpose flour 150 gr Yeast 3 gr Coconut milk 120 ml Coconut oil 20 ml (or cooking oil) Cooking oil 20 ml Sugar 6 tablespoons Salt a little
How to choose fresh and delicious purple sweet potatoes
- You should choose tubers that are evenly sized, feel firm and a bit heavy when held.
- Good tubers usually have a dark purple skin, smooth and without too many black spots on the surface.
- Avoid buying tubers that are scratched, bruised, or have many dark spots on the surface; if pressed, they leak water, which is a sign of spoilage.
What is yeast – instant yeast? Where to buy yeast?
- Yeast consists of living organisms that accelerate the fermentation process, helping the cake to rise, resulting in a soft texture without being dense.
- This is an essential ingredient in baking, especially for bread.
- To buy yeast, you can go to specialty baking ingredient stores, supermarkets, or order online from reputable e-commerce sites.
Tools needed
Steamer set, bowl, knife, spoon, mold,…
How to make Purple Sweet Potato Cake
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Prepare and steam the purple sweet potato
Peel the purple sweet potato, wash it clean, and cut it into pieces. Next, to prevent the sweet potato from turning black, soak it in a diluted saltwater solution for about 5 minutes.
After 5 minutes, place the purple sweet potato into a rice cooker (or steamer) and steam for about 20 minutes until the sweet potato is soft.
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Fermenting and mixing the batter for steamed rice cake
To ferment, pour 150ml of warm water into a bowl, add 1 teaspoon of sugar and 3g of yeast, mix well, and let it sit for about 10 minutes.
For the rice cake batter, mix according to the recipe consisting of 30g of tapioca flour, 150g of all-purpose flour, and 5 tablespoons of sugar, putting everything in a large bowl and mixing well.
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Mashing and mixing purple sweet potato with the batter
After the sweet potato is cooked, take it out onto a plate and gently mash the purple sweet potato with a fork.
Next, pour the mashed sweet potato into a sieve and continue to mash it again until you get the remaining sweet potato pulp in the sieve.
Then, pour the fermented yeast into the prepared flour, mix well until the batter starts to thicken, then add the sweet potato pulp and mix thoroughly so that the batter mixture is well combined, then let it ferment for 40 minutes.
After 40 minutes, add 120ml of coconut milk and 20ml of coconut oil, mix well so that the batter mixture is thick and sticky and let it ferment for another 30 minutes.
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Pour into molds and steam the cake
After 30 minutes, the batter has completely fermented, you prepare to pour the cake into the mold. Use a brush to apply a thin layer of cooking oil on the sides of the mold.
Place the mold into the steamer and gradually scoop the batter into the mold and put it on the stove to steam over medium heat.
Tip: To make the cake tastier, after about 2 – 3 minutes, you should open the steamer lid and wipe dry the condensation inside or cover the lid with a thin cloth!After steaming for about 10 minutes, the cake has puffed up, you can check by poking a toothpick into the cake; if it comes out easily and does not stick to the batter, the cake is done.
At this point, you carefully take the cake out, let it cool, and you can enjoy it right away.
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Final Product
The purple sweet potato sponge cake, after completion, has an incredibly attractive appearance, with a gentle deep purple color that catches the eye.
The cake rises evenly and has a fragrant aroma; when eaten, it is soft and fluffy, with a moderate sweetness from the purple sweet potato blended with the rich flavor of coconut milk, which will surely make everyone fall in love with the first bite.
With detailed instructions on 2 how to make purple sweet potato cake, I hope you can successfully make this chewy, soft, and delicious cake for your family and friends to enjoy. Wishing you success in your cooking!
