Red Bean Soup with Mochi (Oshiruko) Using Shio Koji

red bean soup with rice cake (mochi) (oshiruko)

There’s nothing quite like a warm bowl of oshiruko—sweet red bean soup with mochi—to soothe the soul on a chilly day. This classic Japanese comfort food is gentle, cozy, and just the right kind of sweet.

In this version, I add a little twist with shio koji, a fermented seasoning that brings out a deeper flavor. It adds a touch of saltiness, subtle umami, and even enhances the natural sweetness of the red beans, making each bite feel even more satisfying. Whether you’re familiar with oshiruko or trying it for the first time, this recipe is a comforting hug in a bowl.

shio koji in a jar seen from above

Red Bean Soup with Mochi (Oshiruko) Using Shio Koji

Red Bean Soup with Mochi Oshiruko in a bowl seen from above
This cozy Japanese red bean soup with mochi, or oshiruko, gets a flavorful twist from shio koji, which adds saltiness, umami, and enhances its natural sweetness.
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Sakura Yubi
Cook Time 10 minutes
Total Time 10 minutes
Cuisine Japanese
Course Dessert
Servings 1 servings

Ingredients

directions
 

  • Add sweetened red bean paste into a small pan.
    Add sweetened red bean paste into a small pan
  • And then add some water, little bit at a time. We want just enough water to smooth out the bean paste. I like my soup to be thick, but make it as thick or thin as you like.
    add some water
  • Turn on the heat to low and mix until the red bean paste and water are mixed well together. When the soup looks like this, we are pretty much done with the soup.
    mix until the red bean paste and water are mixed well together
  • Add a little bit of shio koji. This adds depth to the flavor.
    Add a little bit of shio koji
  • Pop rice cake (mochi) into a toaster and bake it at 230 °C (446 °F) for 5 minutes or until it becomes soft and puffy.
    If you don't have a toaster, you can cook mochi in the microwave oven or on a frying pan too.
    Pop rice cake mochi into a toaster and bake it
  • When your rice cake is puffy and lightly charred at the top, it's ready!
    rice cake is puffy and lightly charred at the top
  • Add the hot soup into a small bowl, and then add mochi on top. And we are done!
    add mochi on top

Recipe Notes

Nutrition

Serving: 1servingCalories: 508.2kcalCarbohydrates: 115.9gProtein: 8.9gFat: 0.3gSodium: 181.8mgFiber: 4.1gSugar: 66.6gCalcium: 27.2mgIron: 2mg
Keyword anko, azuki, japanese, mochi, oshiruko, red beans, rice cake
Red Bean Soup with Mochi Oshiruko in a bowl seen from above

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