Shrimp Dumpling Clear Soup (海老真薯のお吸い物, Ebi Shinjō no Osuimono)

Ingredients

Equipment Needed

• •Suribachi and surikogi, or a food processor
• •Fine-mesh strainer lined with a clean cloth
• •Oroshigane grater, or the fine side of a box grater
• •Wide shallow saucepan for poaching
• •Lidded lacquer soup bowls (wan), or small warmed bowls

Instructions

1. 1

   Chill the shrimp

   Pat the shrimp very dry, remove any dark veins, and keep it chilled over a bowl of ice while you make the stock. Shrimp paste is not difficult, only wet or warm when it misbehaves. Extra moisture weakens the bind and can fleck a clear soup, so start with cold, dry shrimp and you've done half the work.

2. 2

   Steep the konbu

   Wipe the konbu with a damp cloth, but don't wash it. Put it in the cold water and warm it slowly over low heat, 10 to 12 minutes. Pull it when the water trembles and small bubbles climb the pot's sides, before a full boil. Boiled konbu gives a faint bitterness and a slick texture, exactly what a clear soup does not forgive.

   You're steeping the konbu, not boiling it. That white bloom on the surface is flavor, not dirt.
3. 3

   Add the flakes

   Bring the water to a gentle boil, add the katsuobushi all at once, and take the pot off the heat. Let the flakes sink for 2 to 3 minutes, no stirring. They give up their aroma quickly; stirring breaks them into fine dust and muddies the stock.

4. 4

   Strain the dashi

   Strain the dashi through a cloth-lined strainer and let it drip on its own. Don't squeeze. Squeezing presses strong, oily flavors from the flakes into the clear stock. You should have about 5 cups. Measure 1 1/2 cups for poaching the shinjō and 3 1/2 cups for the serving broth.

   The serving broth is the face of the dish. Keeping the poaching dashi separate protects that clear surface.
5. 5

   Season the soup

   Warm the 3 1/2 cups serving dashi with 1 tablespoon sake, the usukuchi shōyu, and 3/4 teaspoon salt. Keep it below a boil. Taste it carefully: it should be clear, savory, and lightly salted, with the soy present as aroma and pale color. If the soy announces itself first, it has become too loud.

6. 6

   Pound the paste

   Roughly chop the chilled shrimp. Put it in a suribachi, sprinkle with the 1/2 teaspoon salt, and pound until the shrimp turns glossy and tacky, 2 to 3 minutes. In a food processor, pulse in short bursts and scrape often, stopping while the paste is still cold. Salt dissolves the binding proteins in the shrimp; if this sticky stage doesn't happen, egg white and yam cannot repair it later.

   This is the detail that decides the dumpling. Shape comes later. First, the shrimp must cling to itself.
7. 7

   Lighten the paste

   Beat the egg white just to loosen it. Work it into the shrimp paste in three additions, then add the remaining 1 tablespoon sake, the grated yamaimo, and the katakuriko. Stir in one direction until the paste looks satin-smooth and holds a soft mound. The egg white sets gently, the yamaimo gives lift, and the small spoonful of starch guards against collapse without making the dumpling bouncy.

8. 8

   Poach the shinjō

   Warm the reserved 1 1/2 cups dashi in a shallow pan until it barely trembles. Wet two spoons, scoop the paste into 4 oval dumplings, and slide them into the dashi. Poach gently for 5 to 6 minutes, turning once if needed, until opaque and lightly resilient, with the center at 145°F/63°C if you use a thermometer. Lift them out with a slotted spoon. The gentle poach sets the protein without squeezing out the juice; hard boiling tightens the dumpling and clouds the liquid.

9. 9

   Assemble the bowls

   Warm four lidded soup bowls. Set one shinjō in each bowl and ladle the seasoned dashi around it. Lay one sprig of mitsuba and one thin strip of yuzu peel on top. Serve at once, with the surface open and calm. The lid holds the fragrance until the guest lifts it, which is half the pleasure and all the ceremony this bowl needs.

Chef Tips

• •Sourcing first, always. Buy raw shrimp that smell clean and sweet, with firm flesh and no sharp iodine odor. Good frozen shrimp, thawed slowly in the refrigerator, often beats tired shrimp sitting on a counter under a brave little label.
• •The old tool is a suribachi and surikogi, the Japanese mortar and pestle. A food processor works if you pulse and keep the paste cold. Let the machine run hard and the mixture warms, then the dumpling loses the tender spring you were trying to protect.
• •Yamaimo matters. Yamatoimo gives the strongest body, while nagaimo works but is looser and wetter. If nagaimo is what you can get, keep the potato starch in the recipe and dry the shrimp with extra care.
• •Don't use instant dashi here. In some places a stand-in is sensible; in this bowl the stock is the dish. Powder gives you salt first and depth later, if it arrives at all.
• •Serve one dumpling per bowl unless your bowls are very large. The empty broth surface is not wasted space. It lets the eye read the clarity and gives the yuzu room to speak.

Advance Preparation

• •The konbu can soak in the cold water overnight in the refrigerator for a rounder stock. Warm it gently the next day and pull it before the boil.
• •Ichiban dashi is best the day it is made, but it keeps two days refrigerated. Reheat it gently and do not boil it hard.
• •The shinjō paste can be made up to 4 hours ahead. Press a cover directly onto the surface and keep it refrigerated, because cold paste shapes more cleanly and cooks more tenderly.
• •The dumplings can be poached up to 4 hours ahead and held in their poaching dashi in the refrigerator. Rewarm them gently below a simmer, then assemble the bowls with freshly warmed serving dashi.

Frequently Asked Questions

Nutrition Information

1 serving (about 410g)