Sake Manju (Koji-Fermented Steamed Buns)
Quick answer
- Total time
- 210 min
- Level
- Hard
- Servings
- 10 servings
- Ingredients
- 7
About this dish
Sake manju is a regional sweet from Taketa and Bungo-ono in Oita.
Read more
Soft-cooked glutinous rice and rice koji first become amazake, then ferment for several more days into a bubbling starter. That liquid leavens a wheat-flour dough without added baker's yeast; each portion wraps sweet red bean paste and is steamed until fluffy. The result has a gentle fermented aroma, mild sweetness, and a tender yet pleasantly chewy skin. These buns were eaten for Children's Day, Obon, local festivals, and breaks during farm work. Warm weather favors the fermentation, while freshly steamed buns were welcomed in winter. Careful temperature control, clean tools, and observation of the starter are essential.
Instructions
Read the steps as a cooking flow: prep, heat, seasoning, doneness control, and finish.
- 1Heat
Sanitize a heatproof container, spatula, and lid with boiling water and cool completely.
Cook the glutinous rice very soft and cool it to 60°C.
- 2Prep
Mix in rice koji and cooled water and hold at 55 to 60°C for about 24 hours.
Stir every 6 hours with the sanitized spatula until sweet, loose amazake forms.
- 3Control
Transfer to a clean container, cover loosely, and keep at 20 to 25°C.
Stir daily for 2 to 4 days, until fine bubbles and a pleasantly sweet, lightly tangy aroma develop.
- 4Season
Mix flour, salt, and sugar.
Add the unstrained starter gradually and knead for 10 minutes to a soft, earlobe-like dough.
- 5Control
Roll the red bean paste into ten 40 g balls.
Divide the dough into ten 60 g portions and keep covered against drying.
- 6Step
Flatten each dough portion with thinner edges, enclose a bean-paste ball, pinch the seam closed, and set seam-side down on parchment.
- 7Control
Cover with a damp cloth and proof in a warm place for 2 to 5 hours, until about 1.5 times larger and a light finger dent returns slowly.
- 8Step
Space the buns in a fully steaming steamer and steam 20 to 30 minutes.
Check that the largest bun reaches at least 74°C, turn off heat, and wait 2 minutes before opening.
Practical Cooking Checks
The cues that matter most while cooking.
- Key technique
- Glutinous rice and rice koji form the amazake starter.
- Finish cue
- Add the unstrained starter gradually and knead for 10 minutes to a soft, earlobe-like dough.
- Avoid this
- If the starter develops fuzzy mold, pink or green spots, putrid odor, or ropy slime, do not taste it and discard the entire batch.
- Storage and reheating
- Sanitize a heatproof container, spatula, and lid with boiling water and cool completely.
Cooking decision evidence
Calculated Charim data and applicable official food safety guidance.
This recipe
210min, 7 ingredients
Category median
50min, 7 ingredients
Based on 119 recipes
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