Japanese Soup for Colds: Ginger Chicken Rice Soup Recipe

Japanese-style ginger chicken zosui is a soft, savory rice soup made with dashi, tender chicken, ginger, and a lightly set egg. It is served hot and is a comforting meal when you want something simple; it is food, not a treatment or cure for a cold.

Ingredients

6 cups (1.42 L) water
2 teaspoons (6 g) instant Japanese dashi granules, preferably kombu-and-bonito style
8 ounces (225 g) boneless, skinless chicken thighs or breasts, cut into bite-size pieces
3 cups (about 480 g) cooked Japanese short-grain rice, chilled or freshly cooked
1 tablespoon (15 g) finely grated fresh ginger
1 tablespoon (15 ml) Japanese soy sauce
1 tablespoon (15 ml) mirin
1 large egg (about 50 g), lightly beaten
2 scallions (about 30 g), thinly sliced
¼ teaspoon (1.5 g) fine salt, plus more to taste
1 teaspoon (5 ml) toasted sesame oil, optional
Shichimi togarashi or a few drops of sesame oil, for serving, optional

Instructions

Prepare the ingredients. Cut the chicken into small, evenly sized pieces so it cooks at the same rate. Grate the ginger, slice the scallions, and beat the egg in a small bowl. If the cooked rice is clumped from refrigeration, separate it gently with a fork; there is no need to rinse it.
Make the dashi. Pour the water into a medium, heavy-bottomed pot and stir in the dashi granules. Set over medium-high heat and bring to a gentle boil, stirring until the granules dissolve. Follow the package’s concentration guidance if it differs from the amount listed, since dashi brands vary in saltiness and strength.
Season the broth and cook the chicken. Stir in the ginger, soy sauce, mirin, and salt. Add the chicken pieces and reduce the heat so the liquid simmers steadily rather than boils hard. Cook for about 8–10 minutes, stirring once or twice. Check the thickest piece with a food thermometer; chicken must reach the USDA FSIS safe minimum internal temperature of 165°F (74°C).
Simmer the rice. Stir in the cooked rice, breaking up any remaining clumps. Simmer gently for 7–9 minutes, stirring occasionally to keep the rice from sticking to the bottom. The grains should soften and release some starch, making the broth lightly creamy, but the soup should still be loose enough to eat with a spoon. Add a splash of hot water if it thickens more than you like.
Add the egg safely. Lower the heat until the surface barely simmers. Pour the beaten egg slowly over the soup in a thin stream while stirring gently in one direction to form soft ribbons. Continue heating and stirring until the egg is fully set and the soup reaches 160°F (71°C), the USDA FSIS safe minimum temperature for egg dishes. Avoid a hard boil, which can make the egg tough and break the rice apart.
Finish and serve. Turn off the heat and stir in the sliced scallions and optional sesame oil. Taste the broth and adjust with a little more salt or soy sauce if needed. Ladle into warm bowls and add shichimi togarashi, if desired.

Tips

Use cooked rice, not raw rice. This is a practical way to turn leftover rice into zosui, and it keeps the cooking time predictable. If starting with freshly cooked rice, let excess steam escape briefly before adding it; very wet rice can make the soup gluey.
Choose a gentle simmer. A rolling boil can toughen the chicken, break up the rice, and make the egg strands ragged. Keep the broth bubbling softly, and stir the bottom of the pot now and then as the rice thickens it.
Adjust for your dashi. Instant dashi is convenient, but some varieties contain salt or strong bonito flavor. Start with the listed amount, taste before adding extra salt, and use kombu-only dashi if you want a vegetarian stock base. Kombu-only dashi tastes more vegetal and less savory than bonito dashi.
Prepare the aromatics ahead. Ginger and scallions can be grated or sliced shortly before cooking. If you grate ginger in advance, cover and refrigerate it, then use it within a day for the freshest flavor.

Serving Suggestions

Serve zosui immediately in individual bowls while the broth is hot and the egg is soft. A small dish of Japanese pickles, such as takuan or cucumber pickles, adds a crisp, salty contrast. If you want a fuller meal, offer steamed greens or a simple side of edamame; keep the sides mild so the delicate dashi and ginger remain easy to taste.

For a more substantial bowl, place a few extra scallion slices on top and offer shichimi togarashi at the table so each person can add spice to taste. A light drizzle of sesame oil gives the soup a toasted aroma, but it is optional and can overwhelm the broth if poured heavily. If serving someone who prefers a thinner soup, ladle in a little hot water or unsalted stock just before serving, then taste again for seasoning.

Variations

Make it without chicken: Omit the chicken and use kombu dashi or a vegetable stock that suits the flavor you want. Add sliced shiitake mushrooms with the broth and simmer until tender. For a vegetarian version, leave out bonito-based dashi and check the labels on the dashi granules and soy sauce.

Use leftover cooked chicken: Stir in about 1½ cups (225 g) shredded, fully cooked chicken after the rice has simmered. Heat until the chicken is steaming hot throughout, then add the egg and bring the soup to 160°F (71°C). This is useful when you already have cooked chicken, but the texture is usually a little less tender than chicken poached in the broth.

Swap the mirin: If mirin is unavailable, leave it out and add ½ teaspoon (2 g) sugar, or omit the sweetener entirely. Mirin contributes mild sweetness and rounded flavor; the soup will taste a little sharper without it. For a version without alcohol, use the sugar substitution and check the mirin label before using.

Change the greens: Stir in a handful of baby spinach, thinly sliced napa cabbage, or chopped komatsuna during the final 2–3 minutes of the rice simmer. These additions soften quickly, so avoid adding them too early if you want them to keep some color and texture.

Make it more gingery: Increase the grated ginger to 1½ tablespoons (about 22 g), or serve extra finely grated ginger on the side. Ginger’s flavor becomes more pronounced as the soup sits, so add it gradually and taste before increasing the amount.

Storage and Reheating

For food safety, refrigerate leftover soup within 2 hours of cooking in shallow, covered containers. It keeps for 3–4 days in the refrigerator. The rice absorbs liquid as it stands, so the soup will become much thicker; that change is normal. For the best texture, store the soup in individual portions and add a little water or unsalted stock when reheating.

Reheat on the stovetop over medium-low heat, stirring often, until the soup is steaming throughout and reaches 165°F (74°C). Check the temperature with a food thermometer, especially in the center of a thick portion. You can also microwave a covered portion, stopping to stir at intervals and checking that it reaches 165°F (74°C). Avoid reheating the same portion repeatedly; warm only what you plan to eat. The rice and egg soften further after reheating, so leftovers will be thicker and less delicate than freshly made zosui.

Frequently Asked Questions

What is zosui?
Zosui is a Japanese rice soup made by simmering cooked rice in seasoned broth, often with ingredients such as egg, vegetables, or chicken. Recipes vary by household and region. It is related to okayu, a rice porridge, but zosui commonly starts with cooked rice and has a brothier consistency.

Can I use uncooked rice?
This recipe is designed for cooked rice, so uncooked rice will not soften in the stated time and would absorb a different amount of liquid. Cook the rice separately first, then measure 3 cups (about 480 g) for the soup. If you want a recipe built around uncooked rice, expect a longer cooking time and adjust the broth as the grains absorb it.

Can I make this without dashi granules?
Yes. Use 6 cups (1.42 L) of prepared kombu dashi, bonito dashi, or a mild unsalted chicken stock instead of the water and granules. Kombu dashi gives a gentle, seaweed-like savoriness, while chicken stock makes the result taste less traditionally Japanese and more like a simple chicken rice soup. Taste before adding salt because prepared stocks vary.

How do I keep the egg in soft ribbons?
Keep the soup at a bare simmer, pour the beaten egg in a thin stream, and stir slowly in one direction. Stirring vigorously disperses the egg into tiny bits. The egg must still be fully cooked: continue heating until the soup reaches 160°F (71°C), even if the ribbons look set earlier.

Can I freeze Japanese chicken rice soup?
You can freeze it, but the rice may become soft and break down after thawing, and the egg can turn less smooth. For better texture, freeze the chicken and broth before adding the rice and egg, then thaw in the refrigerator, bring to a simmer, add cooked rice, and finish with freshly beaten egg. Refrigerate or freeze leftovers promptly; do not leave the soup at room temperature for extended storage.

Is this soup a cure for a cold?
No. It is a warm, mild meal, not a medical treatment, and no ingredient in the recipe should be considered a cure. If you have concerns about symptoms or what foods are appropriate for you, seek advice from a qualified health professional.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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