Niai (Sweet-Sour Simmered Root Vegetables)

Quick answer

Total time: 70 min
Level: Medium
Servings: 4 servings
Ingredients: 13

About this dish

Niai is a sweet-sour root-vegetable side dish from the Mito area of Ibaraki.

Burdock, carrot, lotus root, shiitake, shirataki, and fried tofu are stir-fried in sequence, simmered with dashi, soy sauce, and sugar, then finished with vinegar and covered so the flavors settle. One explanation links the name to nite aeru, meaning to simmer and combine. The dish uses roots readily grown around Ibaraki and was prepared in quantity for New Year, celebrations, and ceremonial gatherings. Vinegar brightens the oil from the tofu and the sweet soy seasoning.

Ingredients (4 servings)

Ingredient	Amount	Unit
burdock root	200	g
carrot	100	g
lotus root	100	g
dried shiitake mushrooms	5	piece
shirataki	200	g
aburaage fried tofu	1	piece
cooking oil	3	tbsp
soy sauce	4	tbsp
sugar	1.5	tbsp
vinegar	2	tbsp
dashi stock	0.5	cup
white sesame seeds	2	tbsp
salt for blanching shirataki	5	g

Instructions

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

7 steps

1

Control

Soak 5 dried shiitake in warm water for 20 minutes, squeeze, and slice thinly.

Strain the soaking liquid for another use; use the measured 0.5 cup dashi for this simmer.
2

Prep

Cut 200g burdock and 100g carrot into matchsticks.

Quarter thick lotus root or halve thin pieces, slice 3mm thick, soak in cold water for 5 minutes to limit browning, and drain.
3

Season

Pour boiling water over 1 aburaage to remove excess oil and shred it.

Blanch 200g shirataki for 2 minutes in boiling water with 5g salt, rinse in cold water, drain, and cut into easy-to-eat lengths.
4

Control

Heat 3 tbsp oil in a wide pot over medium heat and stir-fry burdock for 3 minutes.

Add carrot, lotus root, aburaage, shirataki, and shiitake in that order at 1-minute intervals, stir-frying for 8 to 10 minutes total.
5

Control

Add 0.5 cup dashi, 4 tbsp soy sauce, and 1.5 tbsp sugar and mix evenly.

Cover partially and simmer over medium-low heat for 12 to 15 minutes, until burdock bends tenderly and lotus root retains a light bite.
6

Control

Pour 2 tbsp vinegar around the pot edge and mix quickly from the bottom for 30 seconds.

Turn off the heat immediately, cover tightly, rest for 15 minutes, then spread in a wide shallow container and cool to 4°C or below within 2 hours.
7

Finish

Rest overnight in the refrigerator, then sprinkle evenly with 2 tbsp white sesame and serve cold or near room temperature.

Do not leave served portions out over 2 hours, and eat leftovers within 3 days.

Practical Cooking Checks

The cues that matter most while cooking.

Key technique: Ingredients stir-fried in sequence from burdock to shiitake
Finish cue: Rest overnight in the refrigerator, then sprinkle evenly with 2 tbsp white sesame and serve cold or near room temperature.
Avoid this: Do not leave served portions out over 2 hours, and eat leftovers within 3 days.