Yaki Manju Grilled Miso Buns

Quick answer

Total time: 570 min
Level: Hard
Servings: 5 servings
Ingredients: 10

About this dish

Yaki manju is a Gunma confection that first steams wheat buns fermented with rice koji, threads four at a time onto bamboo skewers, and grills them under repeated coats of strongly sweet red-miso glaze.

In wheat-growing Gunma, it is traced to misozuke manju made by Ruizo Harashima in Maebashi near the end of the Edo period. The seasoning later moved toward its present sweetness after dark sugar syrup became available. Glutinous rice is cooked into porridge, cooled carefully, mixed with rice koji, and fermented for one to two days to create a starter. Wheat flour and water turn that starter into dough, which is divided into twenty-gram pieces, naturally proofed, and fully cooked by steam. The glaze dissolves coarse sugar and starch syrup with red miso, boils for thirty minutes, and rests after cooling. Brushing and grilling each side two or three times builds a dark sheen, lightly dry surface, and roasted miso aroma.

Ingredients (5 servings)

Ingredient	Amount	Unit
wheat flour	400	g
glutinous rice	10	g
dried rice koji	6	g
salt	2	g
water for dough	180	ml
coarse crystal sugar	150	g
red miso	100	g
starch syrup	15	g
caramel syrup	4	g
water for glaze	200	ml

Instructions

Read the steps as a cooking flow: prep, heat, seasoning, doneness control, and finish.

8 steps

1

Control

Rinse 10g glutinous rice and simmer with 80ml water for 20 minutes into thin porridge.

Cool to 30°C, mix in 6g dried rice koji, and transfer to a sanitized container.
2

Finish

Cover loosely and hold at 28 to 30°C for 24 to 48 hours.

When it smells sweet and fermented, mix in 2g salt to finish the starter. Discard all of it if pink or black mold or a rotten odor appears.
3

Prep

Mix 400g flour with all the starter and first 100ml dough water.

Add up to the remaining 80ml gradually and knead 10 minutes into smooth soft dough that releases from the hands.
4

Step

Divide the dough into twenty 20g pieces and round them.

Space on a damp-cloth-lined steamer tray and proof naturally around 28°C for 60 to 90 minutes until about 1.5 times larger.
5

Control

Steam over medium-high heat for 12 minutes, turn off the heat, and rest covered 3 minutes.

Confirm the largest bun reaches at least 74°C in the center and cool on a clean rack.
6

Control

Boil 200ml glaze water with 15g starch syrup and dissolve 150g coarse sugar.

Whisk in 100g red miso and 4g caramel syrup, then simmer and stir 30 minutes. Cool fully, cover, and rest refrigerated for 2 days, stirring twice daily.
7

Step

Soak five food-safe bamboo skewers in water for 20 minutes and dry; thread four buns on each.

Brush both sides with miso glaze and broil each side for 45 seconds to dry the surface slightly.
8

Finish

Brush again and grill each side for 45 seconds twice more.

When the glaze is dark and glossy with tiny charred edges, serve on the skewers and remove each bun with chopsticks to eat.

Practical Cooking Checks

The cues that matter most while cooking.

Key technique: Wheat buns fermented with rice-koji starter
Finish cue: When the glaze is dark and glossy with tiny charred edges, serve on the skewers and remove each bun with chopsticks to eat.
Avoid this: A single thick glaze burns outside and tastes bitter.
Storage and reheating: Cool fully, cover, and rest refrigerated for 2 days, stirring twice daily.