Homemade Red Bean Paste

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Red bean paste is a sweet bean paste made from azuki beans. It is used as a filling for many Japanese sweets. It requires only 2 ingredients and is easy to make. I am going to explain an easy way to make this delicious paste, including some special tips.

two types of red bean paste . Tsubu-an and Koshi-an in small bowls
Red bean paste : Tsubu-an & Koshi-an

What is Red bean paste (Anko)?

Red bean paste is simply made from cooked adzuki beans and sugar. It is a sweet bean paste and used in fillings of Japanese sweets such as Anpan, Ichigo(strawberry) Daifuku, Sakura mochi, Yomogi dango and red bean ice cream popsicles. They are called An(餡)or Anko(餡子) in Japanese.

soaking adzuki beans and cooking adzuki beans in 4 photos
Red bean paste making process 1-4

What are Adzuki beans?

Adzuki beans are also known as Azuki or Aduki beans or red mung beans. They are a small bean cultivated in Asia. In Japan, there are two types of Adzuki beans in terms of size; ordinary adzuki and Dainagon. Dainagon is bigger and about 5.5mm(0.2 inch) in diameter. You can get ordinary Adzuki Beans from Asian grocery stores and online.

Adzuki beans in a small bowl
Adzuki beans

2 types of Red Bean Paste

There are two types of these beans; Tsubu-an and Koshi-an. They translate to Mashed coarse bean paste and Sieved smooth bean paste.

Tsubu-an on the left and Koshi-an on the right in small bowls
Tsubu-an & Koshi-an

How to make Tsubu-an?

Basically, soak the beans overnight, then cook the beans and drain the water. Then repeat and change the cooking water three times in order to remove astringency. Finally then drain completely, add sugar and reduce it. Even though the translated name means mashed, there is no need to actually mash the cooked beans.

4 photos showing how to remove astringency in 4 photos
Red bean paste making process 5-8

How to make Koshi-an?

The basic method of making bean paste is the same. However, there is one simple step that is different. To make a puree we use a fine sieve. After the cooking is complete use a Japanese kitchen cloth to strain the beans. This is a time-consuming process so nowadays we use food processors to speed it up.

adding sugar and cook to make bean paste in 4 photos
Red bean paste making process 9-12

Time saver “Pressure Cooker”

You can save time to cook red beans by using a pressure cooker. Wash the beans and cook it for 15 minutes in simmering water. Drain the cooking water and add clean water and repeat the same to remove astringency. Then drain the water again and add just enough water to cover the beans and cook in a pressure cooker for 20 minutes. Drain the water, add sugar and the rest is same.

drained cooked red beans and sugar added in a cooking pot

Sugar and ratio to make the bean paste

Original recipes use a Japanese sugar called “Johakuto”. It is available from Japanese grocery stores however it is pricy compare to caster sugar. The difference is Johakuto melts easier than Caster sugar. I actually use caster sugar and it seems to work just fine. The recipe uses a ratio close one to one.

two airtight container filled with red bean paste for storing
Storing red bean paste

How to store & how long do they keep?

Keep the paste in an airtight container. It will keep for 3-4 days in the fridge and about a month in the freezer. If possible divide the paste into the amount that you would use at a time or score them like the above photo.

two different types of red bean paste in two small bowls

Tips for perfect Red bean paste

1. Remove astringency

Bring the water to boil and cook the soaked beans for about 15 minutes. Drain the cooking water and add clean cups of water. Repeat this process 3 times in order to remove astringency.

2. Kneading with a wooden spatula

After you add sugar to the cooked beans, sugar melts and beans will be glossy. You need to keep kneading with a wooden spatula consistently until the glossiness disappears. That is the time to turn the heat off.

Cooked red bean paste cooking down on a stainless steel tray

3. Cooling the red bean paste

Cool the paste immediately after the heat turned off. Because of the residual heat, the paste will continue to cook in the pot. So it is important to place the cooked paste on a stainless steel tray.

Koshi-an in a small bowl on the left and Tsubu-an in a small bowl on right

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two types of red bean paste . Tsubu-an and Koshi-an in small bowls

Red Bean Paste 餡子

4.78 from 9 votes
Red bean paste is a classic ingredient in many Japanese desserts and snacks. It is easy to make at home if you follow the tips with step by step photos.
Prep Time 5 minutes
Cook Time 30 minutes
Total Time 35 minutes
Servings: 1 kg

Ingredients

  • 200 g Dry Adzuki Beans
  • 200 g sugar
  • Water to cook beans

Instructions

Tsubu-an (mashed red bean paste)

  • Wash the adzuki beans and soaked it overnight.
  • Drain the soaking water and place adzuki beans in a large pot. Cook it over high heat and bring it to boil.
  • Turn the heat down and simmer for about 15 minutes.
  • Remove the pot from the heat and drain the cooking water. Put the beans back into the pot and add clean water and repeat the same process two more times. *2
  • Remove the pot from heat and drain the cooking water completely using a strainer.
  • Put cooked beans back in the pot and add sugar.
  • Stir them all together with a wooden spatula. It will be a little runny and glossy when the sugar melts.
  • Keep kneading with the wooden spatula. It will become thicker as the liquid evaporates.
  • When the paste loses its glossiness, turn the heat off.
  • Scoop out the paste onto a stainless steel tray to cool.

Koshi-an (Smooth red bean paste)

  • First 5 steps are same.
  • Before adding the sugar, place the cooked beans in a food processor and blitz them.
    Cooked beans just food processed
  • Put them back into the pot and add sugar.
    sugar added to red bean puree
  • Keep stirring and kneading as it gets thicker with a wooden spatula.
    stirring bean paste with spatula
  • When it loses the glossiness and becomes thicker, turn the heat off and cool on a stainless steel tray.

Notes

*1 This is for removing astringency off the beans and need to repeat this process three times.
*2 To save time, you can use pressure cooker to cook beans at third time for about 15 minutes. 
*makes about 600g of Red bean paste (about 2 cups)

Nutrition

Calories: 1432kcal · Carbohydrates: 326g · Protein: 40g · Fat: 1g · Saturated Fat: 1g · Sodium: 12mg · Potassium: 2508mg · Fiber: 25g · Sugar: 200g · Calcium: 132mg · Iron: 10mg
Course: condiments, Dessert
Cuisine: Japanese
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Shihoko Ura of Chopstick Chronicles
About The Author

Shihoko Ura

Shihoko Ura is a Japanese home cook and cookbook author with a passion for food and photography. She shares her authentic and beloved recipes with step-by-step guides and helpful tips so you too can make delicious Japanese food at home. Her recipes have featured in The Japan Times, Buzzfeed, and Country Living.

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Questions and Reviews

  1. 5 stars
    My brother wanted to try and make this red bean paste. So we followed your recipe and it actually came out really well. Thanks for sharing this.

  2. Hello shihoko,
    In the instructions stage 4 , when you say “repeat the process 2 more times “ you mean also cooking 2 more times for 15 minutes?

  3. 5 stars
    I love the idea of having two choices when making this red bean paste. I am Korean so I grew up eating patbingsoo and so this recipe was perfect to use instead of the can version. Thanks for the recipe.

  4. 5 stars
    I am seriously fascinated by this post! I LOVE Asian cooking and baking, and ever since having a red bean taiyaki last fall, I’ve wondered where the filling came from. Now I can try making them myself (only not nearly as cute without the fish mold) – thank you!

    1. Yes You can Zuza. Wrap it in small batch with cling wrap and then in a freezer zip lock bag. It will last about a month.

    1. Traditionally we use Azuki beans in Japan but to make white anko we use another beans. Principal is same so yes you can use something else 😀