Hakata Zōni (博多雑煮, Fukuoka New Year soup)

Ingredients

Equipment Needed

• •Fine-mesh strainer lined with sarashi cloth, a clean cotton towel, or an unbleached coffee filter
• •Lidded lacquer soup bowls (wan), or deep warmed bowls
• •Small pot for softening mochi
• •Slotted spoon or bamboo skimmer

Instructions

1. 1

   Soak the dashi

   Break the dried ago in half. If the belly cavity is dark and bitter-looking, pinch out the black innards. Wipe the konbu with a damp cloth, but don't wash it. That pale bloom on the surface is flavor, not dirt. Put the ago, konbu, dried shiitake, and cold water in a pot or bowl and refrigerate 8 to 12 hours. Cold water draws out the clean sweetness slowly; a fast boil makes the fish taste coarse before it has given you depth.

   This is Hakata's first secret. The stock begins before the stove is lit, and most of the work happens while you leave it alone.
2. 2

   Draw the stock

   Set the soaking liquid, ago, konbu, and shiitake over low heat and bring it up slowly, about 15 minutes. Lift out the konbu when the water trembles and small bubbles climb the sides of the pot. Let the ago and shiitake barely simmer for 8 minutes, skimming any foam. Strain through a cloth-lined sieve and let it drip on its own. Don't press. Pressing forces smoky bitterness and mushroom sediment into the clear broth you have been protecting.

3. 3

   Clean the buri

   Sprinkle the yellowtail with 1 teaspoon salt and leave it for 30 minutes. Pour boiling water over the pieces just until the surface turns pale, then rinse briefly in cold water and pat dry. This quick blanching, shimofuri, tightens the outside and carries off blood and strong fish smell, so the finished soup stays clear and clean.

   Winter buri should smell mild and look glistening fresh. If it doesn't, change the dish. A New Year bowl should not begin by hiding tired fish.
4. 4

   Parboil the roots

   Put the peeled satoimo in a small pot of cold water, bring to a simmer, and cook 5 minutes. Drain and rinse away the slickness. In fresh water, simmer the daikon and carrot 4 to 5 minutes, until a skewer enters with a little resistance. These vegetables will finish in the dashi, but plain water removes starch and sharpness that would cloud the soup.

5. 5

   Blanch the greens

   Bring a pot of salted water to a boil. Dip the katsuona stems first for 30 seconds, then lower in the leaves for another 20 seconds. Chill in cold water, squeeze gently, and cut into short lengths. Blanching sets the green and softens the mustard edge; the cold water stops the cooking before the leaves go dull.

6. 6

   Season the broth

   Return the strained dashi to a clean pot. Add the sake, usukuchi shōyu, and 1/2 teaspoon salt, then taste. It should be clear, savory, and a shade stronger than you want in the bowl, because the mochi will soften it. Add the shiitake caps, satoimo, daikon, and carrot and simmer quietly for 3 minutes. Add the yellowtail and cook 4 to 5 minutes, just until opaque. Slip in the kamaboko for the final minute. Keep the heat gentle; a hard boil toughens the fish and roughens the broth.

7. 7

   Soften the mochi

   While the broth finishes, bring a separate pot of water to a quiet simmer. Add the round mochi and cook 4 to 6 minutes, until soft through the center but still holding its shape. Lift each one with a wet spoon. The mochi cooks separately because its starch would fog the dashi, and in zōni that fog is not poetry. It's just starch.

   Hakata uses round mochi, the western Japanese New Year shape. Don't grill it for this bowl; the soft, boiled texture belongs in the clear soup.
8. 8

   Assemble the bowls

   Warm four soup bowls. Place one mochi in each, then arrange a piece of yellowtail, one shiitake cap, satoimo, daikon, carrot, kamaboko, and folded katsuona. Ladle the clear broth gently around them and finish with a thin strip of yuzu peel if using. Put the heavier pieces low and the greens a little high, with open broth showing between them. Leave it room. The bowl should read red, white, green, dark, and gold before the first spoonful.

Chef Tips

• •Buy whole dried grilled ago if you can. Packets labeled ago-dashi powder are convenient, but they give you salt and a flat fish note when the stock is the whole point.
• •Katsuona is the Hakata green, and its name matters at New Year. If you can't find it, komatsuna or tender mustard greens will work as a stand-in, but the local meaning is the part you lose.
• •Use winter buri at its shun, firm-fleshed and mild-smelling, with a clean sheen. Sourcing first, always. No amount of soy sauce will rescue fish that was wrong for the bowl.
• •Cook the mochi separately and add it last. It feels like extra trouble until you see the broth stay clear, and then the rule explains itself.

Advance Preparation

• •Soak the ago, konbu, and shiitake 8 to 12 hours ahead. Draw the dashi the same day if you can, or refrigerate the strained dashi for up to 2 days.
• •The satoimo, daikon, carrot, and katsuona can be parboiled or blanched a day ahead and kept separately covered in the refrigerator.
• •Salt and blanch the yellowtail the day you serve it. The fish should taste fresh in the bowl, not stored.
• •Do not soften the mochi ahead. Cook it just before serving, while the broth is being reheated gently.

Frequently Asked Questions

Nutrition Information

1 serving (about 470g)