This tomato egg drop soup is a classic Chinese soup: light, refreshing, and full of tender tomato pieces and delicate egg ribbons. Its bright, tangy flavor helps stimulate the appetite, especially on hot summer days. Ready in under 15 minutes, itβs an easy way to use up ripe tomatoes. If you like this, try other simple egg-ribbon soups as well.

If you make this recipe, please tag us on Instagram with #twoplaidaprons β we love seeing your creations! π₯°

Tomato egg drop soup ingredients
Scroll down to the recipe card for exact ingredient amounts.
- Tomatoes β Any variety works; more flavorful tomatoes yield a more vibrant soup. We often use house tomatoes, tomatoes on the vine, or campari tomatoes.
- Water or stock and chicken bouillon powder β These form the soup base. You can use water for a lighter broth or stock for added nutrition; both work well.
- Vinegar β Plain white vinegar gives a clean tang that complements the tomato. The soup is meant to be light and slightly sour to whet the appetite.
- Eggs β Beaten and drizzled into the hot broth to form the egg ribbons.
- Green onions β Use the whites for stir-frying to release aroma, and reserve the green tops as a fresh garnish.
- Toasted sesame oil β Optional but recommended; a small finishing drizzle adds a nutty depth and rounds out the flavor.
- Salt β For seasoning.
- Neutral oil β For cooking the tomatoes and green onion whites.

How to make tomato egg drop soup
Full recipe and quantities are in the recipe card below.
1. Cut the tomatoes. Remove and discard the core, then cut tomatoes into pieces about 1 inch or smaller. Keep any juices released.


2. Stir-fry the tomatoes. Heat oil in a pot over medium-high heat. Add the white parts of the green onions and stir-fry 5β10 seconds until fragrant. Add the tomato pieces and any juices, cooking until softened and starting to stew.

3a. Add liquid and seasonings. Pour in water or stock, then add chicken bouillon powder (if using), salt, and vinegar. Bring the soup to a boil.

3b. Optional β thicken the soup. This soup is traditionally thinner like a clear broth, but if you prefer a thicker texture, whisk 2β3 tablespoons cornstarch with an equal amount of cold water to make a slurry. When the soup reaches a boil, briefly remove it from the heat and slowly stir in the slurry. Return to a boil and allow it to thicken before adding the eggs.
4. Create the egg ribbons. Once the soup is boiling or at a high simmer, slowly drizzle beaten eggs in a circular motion around the pot. Let the eggs set for a few seconds (or until the soup returns to a boil) before gently stirring. The timing controls ribbon thickness: stir sooner for finer ribbons, wait longer for thicker ribbons.

π Pro tip: For medium-width egg ribbons, wait about 5β10 seconds or until the soup briefly returns to a boil before stirring.

5. Finish and serve. Stir in toasted sesame oil and the green parts of the green onions, remove from heat, and serve hot.

Optional add-ons
This soup is a great base to bulk up with extras. Try additions such as:
- Small tofu cubes
- Dried seaweed (rehydrated)
- Peeled, deveined shrimp or other seafood
- A drizzle of chili oil for heat and extra aroma

Storage
Store leftovers in the refrigerator for up to 3 days. Let the soup cool completely before covering and refrigerating.
Reheating
Reheat in the microwave or on the stovetop.
Microwave: Place soup in a microwave-safe bowl, heat until hot, and stir halfway through to promote even heating.
Stovetop: Warm the soup in a saucepan over medium-high heat, stirring occasionally until it reaches a boil.
If you thickened the soup with slurry previously and it thins after chilling, reheat on the stovetop and add a small amount of cornstarch slurry (start with 1 tablespoon cornstarch + 1 tablespoon cold water). Bring to a boil to activate the thickener before serving.

FAQs
Yes. Two tablespoons gives a pleasant tang, but you can increase or decrease the amount to match your taste.
Plain white vinegar provides a clean, neutral acidity. Other vinegars can be used but will change the soupβs flavor profile slightly.
Campari or other flavorful tomatoes produce the most vibrant taste, but house tomatoes, vine tomatoes, or even cherry tomatoes work fine.
Recipe
Tomato Egg Drop Soup
Ingredients
- 8 ounces tomatoes (house, vine, or campari)
- 4 cups water (or chicken/vegetable stock)
- 2 tablespoons white vinegar (adjust to taste)
- 2 teaspoons chicken bouillon powder (optional)
- 1Β½ teaspoons salt
- 2 large eggs, beaten
- 2 stalks green onion, sliced (keep whites and greens separate)
- 1 teaspoon toasted sesame oil
- 1 tablespoon neutral oil for cooking
Instructions
- Cut tomatoes into small chunks (under 1 inch). Discard the woody core but keep juices.
- Heat oil in a pot over medium-high heat. Add the white parts of the green onion and stir-fry until fragrant. Add tomatoes and cook until softened and beginning to stew.
- Add water or stock with vinegar, chicken bouillon (if using), and salt. Bring to a boil.
- If you want a thicker soup, stir in cornstarch slurry (2β3 tablespoons cornstarch mixed with equal cold water) after briefly removing the pot from heat, then return to a boil to thicken.
- Keep soup at a high simmer. Slowly drizzle beaten eggs in a circular motion. Wait a few seconds (or until the soup briefly returns to a boil), then stir gently to form ribbons.
- Finish with toasted sesame oil and the green parts of the green onion. Remove from heat and serve hot.
Notes
- Soup thickness: This tomato egg drop soup is traditionally thin like a clear broth. Use a cornstarch slurry if you prefer a thicker texture.
- Sourness: Two tablespoons of vinegar gives a pleasant tang; reduce to one tablespoon if you prefer milder acidity.
Nutrition (per serving)
Calories: 122.4 kcal | Carbohydrates: 4 g | Protein: 5.2 g | Fat: 9.5 g | Sodium: 1549.5 mg