Odamaki-mushi (小田巻き蒸し, Osaka udon chawanmushi)

Ingredients

Equipment Needed

• •Lidded chawanmushi bowls, or small heatproof donburi covered with foil
• •Steamer, or a deep pot fitted with a rack
• •Fine-mesh strainer lined with a clean cloth
• •Chopstick or thin skewer for testing the custard

Instructions

1. 1

   Steep the konbu

   Wipe the konbu with a damp cloth, but don't wash it. Put it in the cold water and bring it up slowly over low heat, about ten minutes. Pull the konbu when the water trembles and small bubbles climb the sides of the pot, before a full boil.

   The pale bloom on konbu is flavor, not dirt. Boiling it hard draws out bitterness and a slick texture, so the quiet rule is simple: protect the clarity.
2. 2

   Finish the dashi

   Bring the konbu water to a gentle boil, add the katsuobushi all at once, and take the pot off the heat. Leave it alone for two or three minutes, until the flakes sink. Strain through a cloth-lined strainer and let it drip on its own. Don't squeeze. Squeezing presses the strong, oily flavors into the clear stock, and this dish has nowhere for that heaviness to hide. Measure out 2 1/2 cups and cool it until barely warm or room temperature.

3. 3

   Prepare the udon

   Loosen the cooked udon in boiling water for 30 to 60 seconds, just until the strands separate. Drain, rinse briefly with warm water, and drain very well. This washes away surface starch that would cloud the custard and make the noodles gummy. Divide the udon among four heatproof bowls, coiling each portion in a loose circle.

4. 4

   Ready the fillings

   Rub the shrimp with 2 teaspoons of the sake and a pinch of salt, then rinse and pat dry. Cut large shrimp in half lengthwise so they cook in the same time as the custard. Set the anago, shiitake, kamaboko, and ginkgo beside the bowls. Keep the pieces small and neat, because a gentle custard should not have to wrestle with its own filling.

5. 5

   Mix the custard

   Stir the usukuchi shōyu, mirin, remaining 1 teaspoon sake, and 1/4 teaspoon salt into the cooled dashi. Taste this seasoned dashi before the eggs go in. It should be clear and lightly seasoned, a little more distinct than you expect, because the udon will soften it. In another bowl, break up the eggs gently with chopsticks or a fork without whipping air into them. Stir in the seasoned dashi, then strain the mixture through a fine sieve.

   The ratio is the first secret: about three parts dashi to one part egg by volume. Warm dashi makes egg threads, hard beating makes bubbles, and straining catches the bits that would spoil the smooth set.
6. 6

   Fill the bowls

   Place two pieces of anago, one shrimp, a few shiitake slices, two slices of kamaboko, and two ginkgo nuts around the udon in each bowl. Pour the custard in slowly down the side of the bowl, stopping about 1/2 inch from the rim. Pop any large bubbles with a skewer. Cover each bowl with its lid, or with foil if you're using heatproof bowls.

7. 7

   Steam softly

   Set the bowls in a steamer over water at a quiet simmer. Cover the steamer, leaving a narrow gap so the heat stays gentle, and cook for 18 to 22 minutes. The custard is ready when the edges are set, the center trembles when the bowl is nudged, and a skewer brings up clear dashi rather than raw egg. The shrimp should be opaque all the way through.

   Hard heat makes bubbles rise through the custard and leaves little holes. Soft heat lets the egg proteins set slowly around the dashi, which is why the surface stays smooth.
8. 8

   Rest and garnish

   Let the bowls rest for three minutes before uncovering. This finishes the set without toughening it. Lay a small sprig of mitsuba and a strip of yuzu peel on each bowl, if using. Serve with a spoon and chopsticks while the custard is still tender and trembling.

Chef Tips

• •Make the dashi. Instant powder gives salt and a flat bonito taste, but this bowl depends on clean stock moving through egg and udon. When the dashi is right, the rest of the dish relaxes.
• •Use udon with a resilient bite. Fresh udon is lovely, and frozen udon is a sensible stand-in because it keeps its spring after steaming. If the noodles are already soft and sour-smelling in the packet, choose another brand.
• •Choose shrimp that smell clean and look glistening fresh. A tired shrimp announces itself through the custard, and no amount of shōyu will make it polite.
• •Anago is the Kansai-leaning eel here. If you can only find unagi kabayaki, use it sparingly because its glaze is sweeter and darker, and the custard should still taste of dashi first.
• •For a meatless table, make shōjin dashi with konbu and dried shiitake, then use mushrooms, ginkgo, yuba, and mitsuba. That is honmono in the temple line, not a compromise, though it is no longer the seafood-rich Osaka bowl.

Advance Preparation

• •The konbu can soak in the cold water overnight in the refrigerator before heating. This gives a rounder dashi and makes the cooking faster the next day.
• •Finished dashi keeps two days refrigerated. Cool it before mixing with eggs, or the custard will begin cooking before it reaches the steamer.
• •The anago, kamaboko, shiitake, mitsuba, and yuzu can be cut a day ahead and kept covered in the refrigerator.
• •The egg and dashi mixture can be mixed and strained up to three hours ahead. Keep it cold and stir gently before pouring. Assemble the bowls just before steaming so the udon doesn't swell.

Frequently Asked Questions

Nutrition Information

1 serving (about 370g)