Zenzai | JustOneCookbook.com

Zenzai (Red Bean Soup)

Course: Dessert
Cuisine: Japanese
Keyword: oshiruko, sweet red bean
Prep Time: 5 minutes
Cook Time: 5 minutes
Total Time: 10 minutes
Servings: 1
Author: Nami
Zenzai is a traditional Japanese dessert. It’s a thick sweet soup consists of boiled azuki beans and often served with mochi (rice cake) or shiratama dango (glutinous rice flour dumplings. This is a comforting sweet in winter time. 


  • 100 g red bean paste (anko) (100 g = 3.5 oz) (I used Tsubuan, see Notes for homemade recipe)
  • 100 ml water (100 ml = 100 g)
  • pinch salt (kosher or sea salt; use half if using table salt)
  • 1 piece kirimochi or homemade mochi (or Shiratama Dango, see Notes)


  1. Gather all the ingredients.

    Zenzai Ingredients
  2. In a saucepan, heat anko and water and bring it to a boil. Add pinch of salt and mix well. Turn off the heat.
    Zenzai 1
  3. Cut mochi in half/quarter (if you like) and place mochi in a toaster oven and toast (or bake at 400F) until puffed up and golden brown, about 10 minutes.
    Mochi 1
  4. When the mochi is nice and toasty take it out and put it in the Zenzai. Enjoy immediately but be careful and don't burn yourself.

Recipe Notes

Red bean paste (anko): homemade recipe, click here.

Shiratama Dango: homemade recipe, click here.



Recipe by Namiko Chen of Just One Cookbook. All images and content on this site are copyright protected. Please do not use my images without my permission. If you’d like to share this recipe on your site, please re-write the recipe in your own words and link to this post as the original source. Thank you.