Prawn Wonton Soup with Ginger-Sesame Broth

Prawn wonton soup is a Chinese-inspired soup of delicate wrappers filled with seasoned prawns, served in a clear, fragrant broth with greens. This version keeps the filling simple and the broth gently flavored, so the sweet seafood stays central; wonton fillings and seasonings vary across regions and households.

Ingredients

8 oz (225 g) raw peeled and deveined prawns or shrimp, patted dry
2 teaspoons (10 ml) light soy sauce, divided
1 teaspoon (5 ml) toasted sesame oil, divided
1 teaspoon (5 g) finely grated fresh ginger
2 scallions, thinly sliced, white and green parts separated
1 teaspoon (5 g) cornstarch
1 tablespoon (15 ml) cold water
24 square wonton wrappers, about 3½ inches (9 cm) wide
8 cups (1.9 L) low-sodium chicken broth or seafood broth
2 cups (480 ml) water
1 tablespoon (15 ml) Shaoxing rice wine, optional
1 small garlic clove, lightly crushed
4 oz (115 g) baby bok choy, halved lengthwise, or 2 cups (60 g) baby spinach
¼ teaspoon (0.5 g) ground white pepper, or to taste
1 teaspoon (5 ml) rice vinegar, plus more to serve if desired
1 teaspoon (5 ml) neutral oil, for the tray

Instructions

Lightly oil a plate or tray. Finely chop the prawns with a knife until they form a coarse, sticky mince; avoid turning them into a smooth paste. In a bowl, mix the prawns with 1 teaspoon (5 ml) soy sauce, ½ teaspoon (2.5 ml) sesame oil, the ginger, scallion whites, cornstarch and cold water until evenly combined.
Keep the wonton wrappers covered with a barely damp clean towel so their edges do not dry out. Set one wrapper on a clean surface and place about 1 teaspoon of filling in the center. Moisten two adjoining edges with water, fold the wrapper into a triangle and press firmly around the filling to seal, pushing out trapped air. Bring the two corners along the folded edge together and press to make a compact wonton. Place it on the oiled tray and cover. Repeat with the remaining wrappers and filling. Keep the assembled wontons refrigerated if you are not cooking them right away.
Pour the broth and 2 cups (480 ml) water into a large pot. Add the crushed garlic, Shaoxing wine if using, remaining 1 teaspoon (5 ml) soy sauce and white pepper. Bring to a gentle simmer over medium heat, then lower the heat and simmer for 8 minutes. Remove the garlic. Taste the broth before adding salt; low-sodium broth varies, so season only if needed.
Bring a separate wide pot of water to a steady boil. Add the wontons in batches, leaving room for them to move. Stir gently once to prevent sticking, then simmer for about 3–4 minutes, or until the wrappers are tender and the filling is opaque and cooked through. Check the center of a larger wonton with a food thermometer: the prawns should reach the USDA FSIS safe minimum internal temperature of 145°F (63°C). Lift cooked wontons out with a slotted spoon and divide among four warm bowls.
Add the bok choy to the simmering broth and cook for 2–3 minutes, until tender-crisp. If using spinach, stir it in for about 30 seconds, just until wilted. Turn off the heat and stir in the rice vinegar and remaining ½ teaspoon (2.5 ml) sesame oil.
Ladle the hot broth and greens over the wontons. Finish with the scallion greens and serve promptly. Avoid boiling the filled wontons in the soup pot: cooking them separately keeps loose starch from clouding the broth and makes it easier to serve intact wontons.

Tips

Seal carefully. Keep wrappers covered, use only a little filling, and press the edges firmly without leaving air pockets. A loose seal can open during cooking.
Choose suitable wrappers. Look for thin square wonton wrappers in the refrigerated section of an Asian grocery store. Dumpling wrappers are usually thicker and may need a longer cooking time; follow their package directions and check the filling temperature.
Substitute thoughtfully. If you cannot find Shaoxing wine, omit it or use dry sherry; either keeps the broth savory, though the aroma will differ. Spinach replaces bok choy easily but wilts much faster.
Freeze extras uncooked. Arrange shaped wontons separately on a tray and freeze until firm, then transfer to a freezer-safe container. Cook from frozen without thawing, adding a few minutes and checking the filling reaches 145°F (63°C).

Serving Suggestions

Serve the soup as a light main course, with four to six wontons per bowl and extra broth. A side of steamed rice, smashed cucumber salad or simply dressed greens makes the meal more substantial. Offer chili oil, sliced scallions, black vinegar or extra rice vinegar at the table so each person can adjust the bowl. Add condiments a little at a time; salty soy sauce or chili crisp can quickly overpower the mild broth.

Variations

For a more aromatic soup, simmer a few thin slices of ginger with the broth and remove them before serving. Replace half the prawns with finely chopped shiitake mushrooms for an earthy filling, or add a small amount of finely minced water chestnut for crunch. For a lighter broth, use all chicken broth; seafood broth brings a more pronounced ocean flavor. If you cannot find white pepper, use a small pinch of black pepper, knowing it will be sharper and more visible. Check wrapper labels if avoiding wheat, since most wonton wrappers contain wheat flour.

Storage and Reheating

For the best texture, store cooked wontons and broth separately. Refrigerate both within 2 hours of cooking in covered containers; they keep for 3–4 days. Reheat the broth to a boil and warm the wontons gently in it until hot throughout. USDA FSIS guidance is to reheat leftovers to 165°F (74°C), checked with a food thermometer. Avoid prolonged boiling, which can split the wrappers. Freeze uncooked wontons for up to 2 months for best quality; cooked wontons may become soft after freezing. Do not leave soup at room temperature for more than 2 hours, or 1 hour if the temperature is above 90°F (32°C).

Frequently Asked Questions

Can I make the wontons ahead?
Yes. Shape them up to one day ahead, cover well and refrigerate on a tray so they do not touch. For longer storage, freeze them in a single layer until firm, then pack them airtight. Cook frozen wontons straight from the freezer.

How can I tell when prawn wontons are done?
The wrapper should be tender and the filling opaque, but appearance alone is not the most reliable check. Use a food thermometer in the center of a larger wonton; seafood should reach 145°F (63°C).

Can I cook the wontons directly in the broth?
You can, but the broth may turn cloudy from starch and any opened wrappers. Cooking the wontons in separate simmering water gives a clearer soup and makes it easier to check doneness. If you use the broth, cook in small batches and skim away any foam.

What if my filling feels too wet?
Prawns can release moisture if they were not thoroughly drained. Pat them dry before chopping and mix in the cornstarch as directed. If it still seems loose, chill the filling for 10 minutes before wrapping and use a little less filling per wrapper.

Can I use cooked prawns?
Raw prawns are preferable because they bind into the filling and cook evenly inside the wrapper. Chopped cooked prawns tend to make a looser, drier filling; if using them, chill the mixture and cook only until the wrappers are tender and the filling is hot throughout.

Can I make this soup gluten-free?
Use wrappers specifically labeled gluten-free and check that the broth, soy sauce and any cooking wine are gluten-free. Regular wonton wrappers contain wheat, and ordinary soy sauce often contains wheat; tamari may work if its label confirms it is gluten-free.

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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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