Want a reliable anko recipe without the guesswork? You only need azuki beans, sugar and a pinch of salt, plus patient simmering and gentle stirring.
Anko is the backbone of many sweets, so it is worth learning once. This guide sits within our wider look at japanese desserts.
| Item | Value |
|---|---|
| Azuki beans | 200 g (7 oz) |
| Sugar | 180-200 g (6.3-7 oz) |
| Glucose syrup (optional) | 20 g (0.7 oz) |
| Cooking time after the first boil | 15-20 minutes until the beans are cooked through |
| Yield | About 2 cups (approx. 600 g) |
| Total time | 2 hrs 5 mins |
Figures come from RecipeTin Japan’s anko recipe. Recipes vary and pages get updated, so check the source before you rely on these numbers.
What anko is and the two main textures
Anko is a sweet paste made from azuki beans, sugar and a little salt. It fills and tops many Japanese sweets, and it is simple to make at home once you know the rhythm.
The two most common types are tsubuan and koshian, according to The Japan Store’s anko guide. Koshian is smooth because the bean skins have been removed, while tsubuan is chunky and has a thicker texture.
The recipe below makes a rustic, chunky-leaning paste, because the skins stay in. That is the easier route for a first batch. Smooth koshian needs extra straining, which we only describe briefly at the end.
Ingredients and equipment
The ingredient list is short, so quality matters. Pick beans that look plump and evenly coloured, and use a plain white sugar you already like the taste of.
- 200 g azuki beans, rinsed gently.
- 180-200 g sugar, depending on how sweet you want the paste.
- A pinch of salt, which sharpens the sweetness.
- 20 g glucose syrup, optional, for a glossier and softer paste.
- A heavy saucepan, a sieve, a soft spatula and a bowl.
A heavy-bottomed pan helps a lot at the end. Sweet bean paste thickens fast and catches on thin metal, so a sturdy base gives you more control.
How to make anko step by step
The method follows the source recipe: boil, drain, simmer until soft, then add the sugar. Each stage has a clear visual cue, so you do not need to watch the clock constantly.
- Wash the azuki beans gently a couple of times.
- First boil: put the beans in a saucepan and add water to 3-4 cm (1¼-1½ inches) above the beans. Bring to a boil, then drain through a sieve.
- Simmer: return the beans to the pan with fresh water and bring it to a boil again. Reduce the heat to medium low so the beans simmer gently.
- Cook for 15-20 minutes until the beans are cooked through. If beans surface above the water, add a little water to keep them just below the water level.
- Drain through a sieve set over a bowl, so you collect the liquid. Tilt the bowl slowly to pour off the liquid and keep the beans.
- Sweeten: return the beans to the pan, add the sugar and a pinch of salt, and gently mix the sugar in with a soft spatula.
- Thicken: keep stirring over low heat until the paste looks right (see the next section).
- Cool: cover the surface with cling wrap, pressing out air pockets, and let it rest.
The source lists a cook time of 1 hr and a resting time of 1 hr. Plan a relaxed afternoon rather than a rushed one.
How to know when the paste is ready
The key cue is visual. According to the RecipeTin Japan recipe, if you can see the bottom of the pan and the beans start closing the line after hesitating momentarily, it is the right consistency.
In practice, drag the spatula across the pan. A clean trail that slowly closes means the paste is ready. A trail that closes instantly means the paste is still too wet, so cook it a little longer.
Remember that anko firms up as it cools. Stop while it still looks slightly looser than the texture you want in the finished sweet.
Adjusting sweetness, texture and smoothness
The sugar range in the table, 180-200 g for 200 g of beans, gives you room to taste and decide. Use the lower end for a more beany, less sweet paste that suits tea.
The optional glucose syrup adds shine and keeps the paste soft. If you skip it, the paste is still good, only a little less glossy.
- Chunkier: stir less and stop earlier, so more beans stay whole.
- Softer and mashed: press some beans against the side of the pan with the spatula as you stir.
- Smooth koshian: press the cooked beans through a fine sieve to remove the skins before adding sugar. It takes more effort and patience.
Taste near the end. Add a tiny extra pinch of salt if the paste tastes flat.
Using and storing your anko
Cooled anko is ready to use. Roll it into balls to wrap in dough, spread it on toast, or spoon it over shaved ice or ice cream.
It also pairs well with chewy rice-flour sweets, so try it on skewers from our dango recipe. For a contrast of textures, a thin smear between slices works with the sponge in our castella cake recipe.
Because homemade paste has no preservatives, treat it like any cooked food. Keep it covered in the refrigerator for a few days, or portion it into small containers and freeze it so you can thaw only what you need.
Common problems and quick fixes
Most anko trouble comes from heat and haste.
- Beans still hard: add a little hot water and keep simmering gently before you add any sugar. Sugar makes beans firmer, so they must be soft first.
- Paste sticking or scorching: lower the heat and stir the bottom of the pan more often. Scrape the corners, where paste burns first.
- Paste too stiff: stir in a spoonful of warm water until it loosens, then warm it through briefly.
- Paste too runny: cook it a little longer over low heat, stirring constantly, until the pan bottom shows as you drag the spatula.
- Flavour too flat: a tiny extra pinch of salt usually brings the sweetness forward.
Keep the spatula soft and the stirring gentle. Rough stirring breaks every bean into mush, which is fine for smooth paste but not for a chunky one.
Finally, keep notes on your first batch. Write down how much sugar you used and how it tasted, and your second batch will be better matched to your own taste.
Frequently asked questions
Do I need to soak azuki beans overnight?
Show answer
The RecipeTin Japan method above does not call for an overnight soak. It boils the beans, drains them, then simmers them in fresh water until cooked through.
What is the difference between tsubuan and koshian?
Show answer
Koshian is smooth because the bean skins have been removed. Tsubuan is chunkier and thicker, with the same taste, according to The Japan Store.
Can I use less sugar?
Show answer
Yes. The source gives a range of 180-200 g for 200 g of beans, so you can start at the low end. Taste before you finish cooking and adjust.
