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How to Make Sweet Potato Starch

February 25, 2020 15 Comments

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Sweet potato starch (红薯粉 in Chinese) is a very popular starch used in Sichuan cuisine. Like tapioca starch, sweet potato starch can also help to create a lovely chewy texture when cooked with water.

I get lots of feedback saying it is quite hard to get sweet potato starch. The good news is it is quite easy to produce sweet potato starch at home. If you don’t need to store, it can be quite easy. Once sweet potato starch is made, we can further make lots of yummy dishes using this simple ingredient. If you replace sweet potato with regular potatoes, you can make potato starch too.

how to make sweet potato starch|chinasichuanfood.com

Features of sweet potato starch

As the strongest straight-chain amylose, sweet potato starch is quite magic in usage. Comparing with other starch, sweet potato starch is more stable after cooked (hard to dissolve in water), we usually used it as a coating for lots of Sichuan dishes like water boiled dishes including water boiled beef, water boiled fish and water boiled pork. Or in other cases, they are used in taro balls. But it is not a good option for thickening since the stickiness is quite strong and hard to control. My father usually makes large batch of sweet potato starch in winter just after the sweet potatoes are harvested.

how to make sweet potato starch|chinasichuanfood.com

How to use sweet Potato Starch

  1. Sweet potato starch can be used as marinating ingredients in most of the common Chinese stir fry recipes like beef and Chinese broccoli, pork and mushroom stir fry.
  2. It is the best type of starch for all Sichuan style water boiled dishes, working also as a protecting for meats. Example: Sichuan boiled pork.
  3. When used in desserts, sweet potato starch is usually helps to create a chewy texture, like Taiwanese taro balls.
  4. In Sichuan area, we love to use sweet potato starch in a deep-frying batter and make delicious Sichuan style crispy pork (酥肉).
  5. Like other starches, sweet potato starch can be also used to make jelly.
  6. Sweet potato starch can be mixed with an appropriate ratio of water and further make noodles. Sweet potato starch noodle is the key ingredient for Sichuan style Hot and Sour Noodles (酸辣粉).
  7. Steamed noodles can be also made with a thin sweet potato starch batter. Which is further cut into large pieces and usually cooked in soups and hot pot. In Sichuan, we call this as “火锅粉”.

Instructions

Note firstly: I tested with 1500g sweet potatoes (skin removed) and get around 180g pure sweet potato starch this time. The actual ration is between 10% to 20% depending on the different types of sweet potatoes.

Remove the skin carefully and make sure no skin pumps attached, then cut into smaller pieces. Transfer to a blender, add water and blend until really smooth by batches.

how to make sweet potato starch|chinasichuanfood.com

Stain the content. And then add water to wash residue twice and strain again. Wash the starch out as more as possible.

how to make sweet potato starch|chinasichuanfood.com
how to make sweet potato starch|chinasichuanfood.com

Set aside until the starch is settled (if you are not in a hurry, I recommend 4 hours resting). Remove the water on the top and the starch is at the bottom.

how to make sweet potato starch|chinasichuanfood.com

In order to clean the starch and remove any impurities, add water again and mix well, get a fine cloth and strain the starch liquid once again. Set overnight. If you find the water above is not clear enough (may be slightly colored), after most of the starch is settled, you can gently pour off the water and then reload with clean water. No need to stir. After changing the water once or twice, the water should be clean and clear.

how to make sweet potato starch|chinasichuanfood.com
how to make sweet potato starch|chinasichuanfood.com

Remove the water on top and here we get purified sweet potato starch. Spread the dry with sun or wind. If there is no sunning day, you can place the starch in oven and heat with 50 degree C until well dried. It is extremely important to dry the starch completely for a long storage.

how to make sweet potato starch|chinasichuanfood.com
5 from 3 votes
how to make sweet potato starch|chinasichuanfood.com
Print
Sweet potato starch
Prep Time
2 d
 

How to extract starch from sweet potatoes at home

Course: Ingredient
Cuisine: Sichuan
Ingredients
  • 1500g pure sweet potatoes , skin already removed and completely cleaned
  • water as needed , I use around 7L
Instructions
  1. Remove the skin carefully and make sure no skin pumps attached, then cut into smaller pieces. Transfer to a blender, add water to cover the sweet potatoes. Blend until really smooth by batches.

  2. Strain the content to separate residue and the starch liquid. Wash the residue and strain to separate as more starch as possible.

  3. Set aside until the starch is settled (I recommend at least 4 hours resting).Remove the water gently above. Add around 1L water, mix well, repeat the straining and settling process (make sure no sand and other impurities contained).

  4. Set the liquid overnight (Note 1) (long resting time helps to remove the water content in the starch block) and pour off the water above. Here we get the pure sweet potatoes starch. Spread on a tray and dry under sun or bake in oven at 50 degree C until well dried.

  5. If you want to store the sweet potato starch, drying is extremely important. Well dried sweet potato starch can be easily smashed into powder.

Recipe Notes

If you find the water above is not clear enough during the last settling (may be slightly colored), after most of the starch is settled, you can gently pour off the water and then reload with clean water. No need to stir. After changing the water once or twice, the water should be clean and clear.

Filed Under: Pantry, Recipes

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  1. Andreas says

    March 11, 2020 at 7:53 am

    5 stars
    Hi Elaine,

    I don’t really intend to try this, as I can get sweet potato starch quite easily at the Chinese store. But thank you very much for explaining how it works and how it is made. This was very interesting to read and gave me a much better understanding on how and when to use sweet potato starch.

    Reply
    • Elaine says

      March 11, 2020 at 9:16 am

      Store bought starch has the best cost performance since the starch is made from a particular type of sweet potato. My purpose is to introduce the process.

      Reply
      • Robert Brochu says

        April 4, 2020 at 9:01 pm

        Hi Elaine. I loved watching this video and learning how sweet potato starch can be made at home. What dishes do you recommend it is used for?

        Reply
        • Elaine says

          April 5, 2020 at 8:28 am

          I have listed several typical usage of sweet potato starch in the post, as
          Sweet potato starch can be used as marinating ingredients in most of the common Chinese stir fry recipes like beef and Chinese broccoli, pork and mushroom stir fry.
          It is the best type of starch for all Sichuan style water boiled dishes, working also as a protecting for meats. Example: Sichuan boiled pork.
          When used in desserts, sweet potato starch is usually helps to create a chewy texture, like Taiwanese taro balls.
          In Sichuan area, we love to use sweet potato starch in a deep-frying batter and make delicious Sichuan style crispy pork (酥肉).
          Like other starches, sweet potato starch can be also used to make jelly.
          Sweet potato starch can be mixed with an appropriate ratio of water and further make noodles. Sweet potato starch noodle is the key ingredient for Sichuan style Hot and Sour Noodles (酸辣粉).
          Steamed noodles can be also made with a thin sweet potato starch batter. Which is further cut into large pieces and usually cooked in soups and hot pot. In Sichuan, we call this as “火锅粉”.

          Reply
  2. Jesse-Gabriel says

    April 5, 2020 at 3:52 am

    5 stars
    Wow, du bist die Beste, danke fürs teilen!!!
    Grüße,
    Jesse-Gabriel

    Reply
  3. Cindy says

    April 7, 2020 at 7:36 am

    What do you do with leftover sweet potato pulp?

    Reply
    • Elaine says

      April 8, 2020 at 8:54 am

      I simply discard this time. In my old house, we usually give it to our poultry.

      Reply
    • Melanie says

      September 21, 2020 at 12:01 am

      I like to make sweet potato pancakes with my leftover pulp. Mix the pulp with an egg, soy sauce, salt, green onion, sesame oil, and a touch of flour.

      You can also make sweet potato bread! 🙂

      Reply
      • Elaine says

        September 21, 2020 at 8:29 am

        Thanks so much for your information. Using the pulp in bread is an brilliant idea.

        Reply
  4. Alice Aivazian says

    July 12, 2020 at 5:21 pm

    Can I do the same process for normal potatoes as well?

    Reply
    • Elaine says

      July 12, 2020 at 7:42 pm

      Yes, if you use regular potato, then you get common potato starch.

      Reply
  5. Surya Wohl says

    October 27, 2020 at 4:39 am

    Thank you for publishing this. I wanted to know how processed of a food sweet potato starch is and if it was derived via a chemical process. I am very happy to see it is not the case. We love the noodles!!!

    Reply
    • Elaine says

      October 27, 2020 at 9:25 am

      Thank you Surya for trying!!! I love natural food and happy cooking!

      Reply
  6. Melissa says

    February 23, 2021 at 11:37 pm

    5 stars
    I loved your video about making sweet potato starch! You presented the process clearly, timely, and the colors are crisp. You have a lovely voice as well! Thank you!

    Reply
    • Elaine says

      February 24, 2021 at 10:47 am

      Thank you Melissa! You are so so sweet, like the sunshine of the Spring.

      Reply

Hi, Welcome!

Please not be limited by site name, as Elaine shares Chinese recipes beyond Sichuan dishes. Know me more from About Page

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