Tsukimi Soba (月見そば, moon-viewing soba)

The moon in this bowl is only an egg yolk, which is why people become solemn about it. Let them. Tsukimi soba is hot soba in clear broth, finished at the table by a yolk that loosens into the noodles. It is autumn by image, a Jūgoya bowl for the harvest moon, but it belongs just as honestly to a cold weeknight when you want comfort without ceremony.

Two things decide it. First, the broth must be real dashi, clean enough that nothing needs hiding. Steep konbu below a boil, let katsuobushi fall off the heat, and don't squeeze. These are not sacred gestures. Boiling pulls bitterness from the kelp, squeezing drives heavy flavors from the flakes, and the clear pond you wanted becomes dull.

The second detail is the egg. The noodles and broth go into the bowl hot, the yolk sits on top untouched, and you stir only once you are eating. Break it too soon and the soup clouds before the moon has had its moment. Break it at the table and the yolk coats the soba, softening the soy and mirin into something round and quiet. See? Not difficult. Only a little unfamiliar.