Zosui
卵雑炊·(ta-ma-go zoh-soo-ee)
Obaachan's Wisdom: Healing & Zero Waste
When the Ohio winters grow bitter, or the sniffles set in, Obaachan doesn't make chicken noodle soup—she makes zosui. Born from the unforgiving necessity to waste absolutely nothing, this restorative rice soup transforms yesterday’s cold, hard grains and leftover dashi into a masterpiece of domestic comfort. There are no Hollywood embellishments here, just the profound umami of good broth, the delicate suspension of a softly cooked egg, and the singular, non-negotiable grandmotherly secret of rinsing the cooked rice first so the soup remains crystal clear.
Before you start
Use yesterday's rice.
Leftover, fully chilled rice is essential because its lowered moisture content and hardened texture allow it to absorb the hot dashi without immediately turning to paste.
Ingredients
- dashi2 cup
- soy sauce1 tbsp
- sake1 tbsp
- kosher salt1/4 tsp
- cooked Japanese short-grain rice1 1/2 cup
- eggs2 large
- scallions2 med
Method
- 01
Wash the cooked rice under cold running water.
Place the leftover rice in a fine-mesh strainer and rinse it for 15 to 20 seconds, using your fingers to gently break up clumps until the water runs clear. This washes away the sticky exterior starch and ensures the broth remains light and fluid.
- 02
Bring the seasoned dashi to a boil.
In a medium saucepan or traditional donabe pot, combine the dashi, soy sauce, sake, and kosher salt. Place over medium-high heat until it reaches a gentle boil.
- 03
Simmer the washed rice briefly.
Lower the heat to medium-low, add the drained rice to the pot, and stir gently just once or twice. Let it simmer for 2 to 3 minutes until heated through, taking care not to over-stir so the grains remain intact.
- 04
Swirl in the beaten eggs and let them set untouched.
Ensure the soup is at a very gentle simmer, then slowly pour the beaten eggs over the surface in a thin, circular stream. Stop and wait 15 to 30 seconds before touching it, allowing the proteins to set into elegant, fluffy ribbons.
- 05
Trap the steam to finish cooking.
Turn off the heat, give the soup one gentle fold to integrate the egg, and cover the pot with a lid for 1 minute before ladling into bowls and garnishing generously with scallions.
Notes
The dashi reality check.
While soaking kombu and shaving dried bonito is a beautiful ritual, modern Japanese families routinely use instant dashi granules or premium tea-bag style dashi packets for weeknight zosui without sacrificing authentic flavor.
Respect the rice.
Do not substitute jasmine, basmati, or standard American long-grain white rice. They lack the necessary structural integrity and will disintegrate into mush when boiled.
From Cook Japanese in America.