Kuzumochi with Soybean Flour and Brown Sugar Syrup

Nov 3, 2026 · By VanillaGoods

Dessert Custards puddings creams Medium

Kuzumochi with Soybean Flour and Brown Sugar Syrup

Trembling, translucent kudzu cubes dusted with toasted soybean flour and served with dark brown sugar syrup. Use real kudzu starch, not potato starch. Makes 4 servings in about 42 minutes.

Prep 10 min

Cook 12 min

Cooling 20 min

Total 42 min

Servings 4

Diet Dairy free, Vegan

Ingredients

Adjust yield

servings

2 oz (60 g)kudzu (kuzu) starch, crushed fine
3 tbsp (40 g)granulated sugar
1 ¼ cups (300 ml)water, for the kuzumochi
¼ cup (30 g)roasted soybean flour (kinako)
¼ cup (60 g)dark brown sugar
¼ cup (60 ml)water, for the to serve

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Instructions

Crush any lumps of kudzu starch and stir it with the sugar and water in a small saucepan until fully dissolved. Let it sit 10 minutes.
Cook over medium-low heat, stirring constantly with a spatula. It turns lumpy and cloudy, then suddenly gets sticky and translucent, about 6 to 8 minutes.
Keep stirring 2 more minutes, until fully clear and glossy.
Scrape into a wet, shallow container about 6 x 6 inches (15 x 15 cm). Smooth the top and cool in ice water for 20 minutes until set.
Meanwhile, simmer the brown sugar and water 3 to 4 minutes into a thin syrup and cool.
Turn out onto a wet board, cut into 1-inch (2.5 cm) cubes, and toss in the kinako. Serve with syrup.

Tips

Cook constantly stirring or it scorches on the bottom.
Do not refrigerate for long; the cubes turn hard and cloudy.
True kudzu starch is expensive; potato starch will not set the same way.
Good with cold green tea.

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Recipe FAQ

How long does it take to make kuzumochi with soybean flour and brown sugar syrup?

Plan on 10 minutes of prep and 12 minutes of cooking, plus 20 minutes to chill. The recipe makes 4 servings.

How should I store kuzumochi with soybean flour and brown sugar syrup?

Best the same day, at room temperature or lightly cooled. Do not refrigerate.

Can I make kuzumochi with soybean flour and brown sugar syrup ahead?

It is at its best the day it is made; prepare it a few hours before serving.

Is this recipe vegan?

Yes, as written. Check that packaged ingredients such as chocolate, sprinkles and plant butter are labeled vegan.

Serve it with cold green tea.

Estimated · per serving

Nutrition

Per serving = 1 of 4 servings this recipe makes.

460 Calories / serving

1.8g Fat

108.9g Carbs

3.0g Protein

25.1g Sugar

Whole recipe (4 servings): ~1840 cal · 7g fat · 436g carbs · 12g protein · 100g sugar

Estimated values per serving, calculated from standard ingredient data. Not verified Nutrition Facts; actual values vary with brands, measurements, and preparation.