Short answer: soak ½ cup of adzuki beans for 6 to 12 hours. Drain them into a jar or sprouting bag, then rinse and drain twice a day. Use them in 2 to 4 days, when the tails are ¼ to ½ inch long. Cook them lightly before eating.
What are adzuki bean sprouts?
Adzuki beans are small red beans used across East Asia, best known in sweet red bean paste. Their botanical name is Vigna angularis. Sprouted, they keep a firm, nutty bite with a mild sweetness. Sprouting.com gives adzuki 2 to 4 days, with about 2½ cups of sprouts from ½ cup of beans.1
How to grow adzuki bean sprouts
- Day0
Soak
Rinse ½ cup of beans and soak them in plenty of cool water for 6 to 12 hours. They'll swell a lot.
- Day0–3
Rinse and drain
Drain into a jar with a mesh lid or a sprouting bag. Rinse and drain twice a day, three times in hot weather.
- Day2–4
Harvest
Use them when the tails are ¼ to ½ inch long. Longer tails get bitter.
Pick out any beans that haven't swollen after soaking. Hard beans won't sprout.
Nutrition
Like other sprouted legumes, adzuki sprouts provide plant protein and fiber. Sprouting can lower phytate in legumes, which may help with mineral absorption.2
Problems and fixes
| Problem | Likely cause | Fix |
|---|---|---|
| Hard beans that won't sprout | Old or hard seed | Remove them after soaking |
| Sour smell | Too warm, poor drainage | Rinse more often, drain fully |
| Long, bitter tails | Grown too long | Harvest at 2 to 3 days |
Tips for sprouting adzuki beans
- Soak in plenty of water. Adzuki beans swell a lot.
- Use a bag or big jar. A sprouting bag drains well for beans.
- Rinse two or three times a day. Beans can sour in warm weather.
- Harvest early. Short tails, about ¼ to ½ inch, taste best.
Storing adzuki sprouts
Drain and dry them, then refrigerate in a covered container. Use within 3 to 5 days.
How to eat adzuki bean sprouts
- Simmered in soups, like adzuki bean soup with miso and tofu
- Stir-fried with garlic and greens
- Steamed and tossed into salads
- In grain bowls and curries
Find more ideas in sprouting recipes.
Safety
The FDA says higher-risk groups should not eat raw or lightly cooked sprouts, and Health Canada advises everyone to cook them.34
Recipes with adzuki bean
Adzuki bean FAQ
How long do adzuki beans take to sprout?
About 2 to 4 days after a 6 to 12 hour soak. Use them when the tails are about ¼ to ½ inch long.
Do adzuki bean sprouts need to be cooked?
Lightly cooking them is the safer choice and makes them easier to digest. Steam, simmer or stir-fry them for a few minutes.
What do adzuki sprouts taste like?
Nutty and slightly sweet, with a firm bite. They're crunchier and smaller than mung bean sprouts.
Can I sprout adzuki beans from the grocery store?
Sometimes, but they may be old and sprout poorly. Beans sold for sprouting are fresh and tested to germinate.
Written by Michael
A passionate sprouting professional sharing practical tips for growing sprouts and microgreens at home. More about Michael
Sources
- Sprouting.com (Mumm's Sprouting Seeds). Product pages: days to sprout, soak time and yield for each seed. Link
- Elliott H, Woods P, Green BD, Nugent AP. Can sprouting reduce phytate and improve the nutritional composition and nutrient bioaccessibility in cereals and legumes? Nutrition Bulletin, 2022. Link
- U.S. Food and Drug Administration. Selecting and Serving Produce Safely. Link
- Health Canada. Food safety tips for sprouts. Link
