How Much Is 1 Serving of Soup? Cups, Ounces and a Recipe

For most soups, plan on 1 cup (240 ml) per person for a small starter, or 1½ to 2 cups (360–480 ml) for a filling main-course bowl. This tomato, white bean, and vegetable soup makes one hearty serving of about 2 cups, so it also shows how a portion looks when you measure it at home.

Ingredients

1 teaspoon (5 ml) olive oil
¼ cup (40 g) finely chopped yellow onion
⅓ cup (45 g) finely chopped carrot
¼ cup (25 g) finely chopped celery
1 garlic clove (about 3 g), finely chopped
½ cup (120 g) canned diced tomatoes, with their juices
½ cup (85 g) canned white beans, drained and rinsed
1 cup (240 ml) low-sodium vegetable broth
½ cup (120 ml) water
¼ teaspoon (about 0.25 g) dried oregano
1 cup (30 g) loosely packed baby spinach
1 teaspoon (5 ml) lemon juice
⅛ teaspoon (about 0.75 g) fine salt, plus more to taste
⅛ teaspoon (about 0.3 g) ground black pepper, or to taste

Instructions

Prepare the ingredients. Finely chop the onion, carrot, celery, and garlic. Drain and rinse the beans, measure the remaining ingredients, and set out a small saucepan that holds about 1 to 1½ quarts (1 to 1.5 liters). Allow about 12 minutes for this prep, especially if you are chopping by hand.
Soften the vegetables. Set the saucepan over medium heat and add the olive oil, onion, carrot, and celery. Stir occasionally and cook for 5 minutes, until the onion looks translucent and the carrot begins to soften. If the vegetables start to stick or brown quickly, lower the heat and add a teaspoon of water.
Add the garlic and oregano. Stir in the garlic and dried oregano and cook for 1 minute, stirring so the garlic does not scorch. It should smell fragrant, not toasted or bitter.
Simmer the soup. Add the tomatoes and their juices, white beans, broth, water, salt, and pepper. Stir and bring the liquid to a gentle boil, then reduce the heat to maintain a steady simmer. Cook uncovered for 12 minutes, stirring once or twice. The vegetables should be tender but not falling apart, and the broth should taste unified rather than like separate canned ingredients.
Finish and portion. Stir in the spinach and cook for about 1 minute, just until wilted. Turn off the heat, add the lemon juice, and taste the broth. Adjust the salt, pepper, or lemon if needed. Ladle the soup into one bowl; the finished portion should be close to 2 cups, though the exact volume varies slightly with evaporation and the size of the chopped vegetables.

Tips

Use volume as a guide, not a universal rule. A cup is a useful standard for comparing soup portions, but it does not mean every recipe or restaurant serves exactly the same amount. Brothy soup with few solids can feel like a light serving at 1 cup, while a thick bean, noodle, or meat soup may be satisfying in a smaller bowl. For a meal, use the 1½-to-2-cup range as a starting point and adjust for the rest of the menu and your appetite.

Measure the finished soup for the clearest portion. If you are dividing a larger pot, stir it well first so beans and vegetables are distributed evenly. Then use a liquid measuring cup or ladle with a known capacity. Dividing the total yield by the number of portions is more reliable than estimating from the pot, especially when ingredients settle at the bottom.

Choose broth with salt in mind. Low-sodium broth gives you more control because canned tomatoes and beans can already contain salt. If using regular broth, start with less added salt and taste near the end. A little lemon brightens the soup, but add it after simmering so its fresh flavor remains noticeable.

Keep the vegetables small and similar in size. Finely chopped carrot and celery cook in the short simmer time used here. Larger pieces may still be firm when the beans and tomato broth are ready. If you prefer larger chunks, sauté them for a few extra minutes before adding the liquids, or simmer the soup longer and add a splash of broth if it reduces too much.

Serving Suggestions

Serve this one-person soup hot in a bowl that holds at least 2 cups (480 ml), leaving room to stir and carry it without spilling. A slice of toasted bread, a small roll, or a few crackers make a simple accompaniment; these are optional and do not change the recipe’s stated soup yield. For a more substantial meal, pair the bowl with a green salad or a sandwich and decide whether the soup is the main dish or one part of the meal.

The cup estimate can help when setting out bowls for guests. One cup (240 ml) is a sensible starting portion when soup is served before a larger dinner. If soup is the main course, allow about 1½ to 2 cups (360–480 ml) per adult, then make extra if guests are likely to want seconds. For a group of four, that means roughly 6 to 8 cups (1.4–1.9 liters) of main-course soup, rather than assuming four small starter portions will be enough.

For a neat serving, ladle the soup into a measuring cup first and then transfer it to the bowl. This is useful when tracking recipe yield or portioning leftovers, but there is no need to measure every bowl at the table. A standard US cup is 8 fluid ounces (237 ml), commonly rounded to 240 ml in recipes; ounces by weight are different and vary with the soup’s ingredients.

Variations

Make it heartier. Stir in ¼ cup (about 40 g) cooked small pasta or cooked rice near the end, and add a little extra broth if the grains absorb too much liquid. For a larger single meal, increase the soup to about 2½ cups (600 ml) by adding broth and another small scoop of beans; note that this changes the finished serving size and may require a few additional minutes to heat through.

Swap the greens or beans. Chopped kale can stand in for spinach, but simmer it for several minutes until tender instead of adding it for only 1 minute. Chickpeas or drained kidney beans work in place of white beans and make the soup a little firmer in texture. If using dried beans, cook them fully before adding; the brief soup simmer is not long enough to soften dried beans safely or reliably.

Use what is in the pantry. Vegetable broth can be replaced with chicken broth for a non-vegetarian version, or with water plus a small amount of extra seasoning if broth is unavailable. Water makes a less savory soup, so taste and adjust at the end. Fresh oregano can replace dried oregano; use about ¾ teaspoon (1 ml) chopped fresh leaves in place of ¼ teaspoon dried.

Adjust the texture. For a thicker bowl, mash a few beans against the side of the saucepan and stir them back in. For a more brothy result, add hot broth or water a tablespoon (15 ml) at a time. If doubling or tripling the recipe, use a larger pot and taste for seasoning after cooking rather than multiplying salt exactly, since broth brands and canned ingredients differ.

Storage and Reheating

Let leftover soup cool briefly, then refrigerate it in a covered, shallow container within 2 hours of cooking. It keeps for 3 to 4 days in the refrigerator. Because this recipe makes one serving, leftovers are likely to be a small amount; transfer them promptly rather than leaving the saucepan on the counter until it is completely cold.

For longer storage, freeze the soup in a freezer-safe container for about 2 to 3 months for best quality. Leave a little space at the top because liquid expands as it freezes. Thaw it overnight in the refrigerator when possible, or reheat it directly from frozen over low heat with a splash of water or broth, stirring as it loosens.

Reheat only the amount you plan to eat. Warm it in a saucepan over medium-low heat, stirring occasionally, until steaming throughout; for leftovers, the USDA FSIS safe reheating temperature is 165°F (74°C), checked with a food thermometer. In a microwave, cover loosely, heat in short intervals, and stir between intervals so the center and edges heat evenly. Add a small splash of liquid if the beans have thickened the broth while stored.

Frequently Asked Questions

Is one cup of soup one serving?

It can be, especially when soup is served as a starter or alongside a full meal. For a main course, many cooks plan on 1½ to 2 cups (360–480 ml) per person. The recipe, thickness, and amount of solid ingredients all affect how filling a particular cup will be.

How many ounces are in a serving of soup?

A 1-cup serving is 8 US fluid ounces, or about 237 ml. A 1½-to-2-cup main-course portion is 12 to 16 fluid ounces, or roughly 355 to 475 ml. These are volume measurements; weighing soup in ounces will give a different number depending on its density and ingredients.

How much soup should I make per person?

For a starter, allow about 1 cup (240 ml) per person, plus a little extra if you expect seconds. For a soup-centered meal, plan on 1½ to 2 cups (360–480 ml) per person. Multiply that amount by the number of diners, then consider whether bread, salad, or another substantial dish will also be served.

Does thick soup have the same serving size as broth?

Not necessarily. The same measured volume of thick soup may contain more beans, vegetables, or grains, while a broth-based soup may contain mostly liquid. Use the recipe’s stated yield when available, and use 1 cup for a starter or 1½ to 2 cups for a main-course portion as a practical estimate rather than a strict nutritional standard.

How do I divide a large pot into equal servings?

Stir the pot thoroughly so the solids are evenly distributed, measure the total yield in cups or liters, and divide by the number of portions you want. For example, 8 cups (about 1.9 liters) divided into four equal portions gives 2 cups (480 ml) per serving. Ladle each portion into a measuring cup if accuracy matters.

Can I use this recipe to make more than one serving?

Yes. Multiply each ingredient by the number of portions, use a saucepan large enough to simmer without crowding, and check the vegetables for tenderness rather than relying only on the original time. A larger batch can take longer to return to a simmer. Add salt gradually and taste at the end, since broth and canned foods vary in seasoning.

More recipes to cook

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

Spotted an error? Tell us and we will correct it (corrections policy).