1 Wash 200 grams of adzuki beans. Soak them in plenty of water overnight.

2 Drain. Add enough fresh water to more than cover the beans. Heat to boiling, then remove from heat.

3 Drain in a strainer, then rinse under a tap.

4 Add tap water and heat again. After the water boils, add about 400 ml of cool water to lower the temperature. Simmer at low heat.

5 Fill the pot with water, after the beans are soft enough to mash them easily with a finger. Remove any scum that comes to the water surface. Let stand for a while.

6 Discard the top part of the water, after the beans and tiny bean particles sink to the bottom of the pot.

7 Simmer again, while skimming off any scum that rises to the surface. Add 250 grams of sugar and a half-teaspoon of salt. Before serving, add some grilled mochi rice cake to each bowl.