Rinse the adzuki beans and add enough water or boiling water to cover. Heat on high.
After bringing the water to a boil, pour 400 ml of cold water and continue to boil over high heat.
After bringing it back to a boil, discard the water and drain the beans in a colander. Rinse quickly to get rid of the bitterness.
Cover with 4 to 5 times more water than beans and bring to a boil. Reduce the heat to low and continue to cook over low heat for 1 1/2 to 2 hours.
After the beans are tender, add the sugar.
Adding water several times if necessary, continue to cook for about 1 hour. When the liquid is the consistency you prefer, it's done!
If you let it stand for about 30 minutes after removing it from the heat, the flavor will become richer.
It's true comfort food.
Story Behind this Recipe
This is a really basic recipe for cooking adzuki beans. It's easy and tasty, so it's how I usually do it. I like to serve it as-is as sweet red bean soup, so I don't add any salt, but feel free to do so.
While cooking the beans, ensure that they are always covered in water. Add water as necessary (check every 30 minutes). If you want to make it less sweet, reduce the amount of sugar to 150 g. Mashing some of the adzuki beans while cooking them will make a countryside-style adzuki soup.