Peruvian Vegetarian Soup with Quinoa and Vegetables

Peruvian vegetarian quinoa soup is a hearty, brothy dish made with quinoa, potatoes, vegetables, and herbs, often seasoned with aji amarillo. This version is easy to adapt to what you have on hand, and its mix of tender grains and vegetables makes a satisfying meal on its own or alongside bread.

There are many regional and household versions of Peruvian quinoa soup, so this recipe is an interpretation rather than a claim to a single definitive style. It keeps quinoa and potatoes at the center, builds flavor with a gently sautéed vegetable base, and finishes with fresh cilantro and lime for a bright, balanced bowl.

Ingredients

1 cup (170 g) quinoa, any color
2 tablespoons (30 ml) neutral oil, such as sunflower or canola
1 medium yellow onion, about 1 cup (150 g), finely diced
2 medium carrots, about 1 cup (130 g), peeled and cut into small dice
2 celery ribs, about 1 cup (100 g), finely diced
2 garlic cloves, finely chopped
1 tablespoon (15 g) aji amarillo paste, or use the substitute described below
8 cups (1.9 L) low-sodium vegetable broth
2 medium Yukon Gold or yellow potatoes, about 12 oz (340 g), cut into ½-inch (1.3 cm) cubes
1 teaspoon (2 g) ground cumin
1 teaspoon fine salt, plus more to taste
¼ teaspoon black pepper
1 cup (150 g) corn kernels, fresh or frozen
1 cup (150 g) green peas, fresh or frozen
2 cups (140 g) thinly sliced green cabbage or savoy cabbage
½ cup (15 g) chopped fresh cilantro leaves and tender stems, plus extra to serve
2 tablespoons (30 ml) fresh lime juice, plus lime wedges for serving
Optional: ½ cup (60 g) crumbled queso fresco made with vegetarian rennet, for serving

Instructions

Put the quinoa in a fine-mesh sieve and rinse under cool running water for about 30 seconds, rubbing the grains lightly with your fingers. Let it drain while you prepare the vegetables. Rinsing removes some of the quinoa’s naturally bitter-tasting saponins; a thorough rinse is especially useful if the package does not say the quinoa is pre-rinsed.
Heat the oil in a large heavy-bottomed pot or Dutch oven over medium heat. Add the onion, carrots, and celery and cook for 6 to 8 minutes, stirring now and then, until the onion is soft and translucent and the carrots begin to lose their raw firmness. Keep the heat moderate: the aim is to soften and sweeten the vegetables, not brown them deeply.
Stir in the garlic, aji amarillo paste, cumin, salt, and black pepper. Cook for about 1 minute, stirring constantly, until fragrant. If you cannot find aji amarillo paste, use ½ cup (75 g) finely diced yellow bell pepper and ¼ teaspoon cayenne or a little minced jalapeño. This substitute is milder and less fruity than aji amarillo, so add the pepper to the pot with the onion and adjust the heat at the table.
Pour in the vegetable broth and add the potatoes and rinsed quinoa. Stir well, scraping the bottom of the pot to loosen any flavorful bits. Bring the soup to a boil, then lower the heat to maintain a gentle simmer. Partially cover the pot and cook for 20 minutes, stirring once or twice so the quinoa does not settle and stick. The potatoes should be nearly tender and the quinoa should look expanded, with its little curled germ beginning to separate.
Add the corn, peas, and cabbage. Simmer uncovered for 7 to 10 minutes, until the potatoes are completely tender, the cabbage has softened, and the quinoa is cooked through but still has a slight bite. Frozen peas and corn can go straight into the pot; if you use fresh peas or corn, check them near the lower end of the timing. Avoid boiling the soup hard at this stage, which can break up the potatoes and make the broth cloudy.
Turn off the heat and stir in the cilantro and lime juice. Taste the broth before adding more salt, since vegetable broth varies in saltiness. If you prefer a more pronounced citrus note, add another teaspoon of lime juice at a time. Let the soup stand for 2 minutes, then ladle it into bowls and finish with extra cilantro, lime wedges, and optional queso fresco.

Tips

Cut the vegetables evenly. Small, similarly sized pieces of carrot, celery, and potato cook at a similar pace. Keep the potato cubes close to ½ inch so they become tender during the simmer without requiring extra cooking that can overcook the quinoa.
Choose your heat level. Aji amarillo paste varies by brand and can be quite punchy. Start with 1 tablespoon for a gently warming soup, then offer hot sauce or extra chile separately. If using yellow bell pepper in place of the paste, remember that it supplies flavor and color but very little heat.
Keep the quinoa from turning mushy. Simmer gently and check the pot near the end rather than letting it boil unattended. Quinoa continues to absorb broth as it sits, so stop cooking when the grains are tender but still distinct and the potatoes hold their shape.
Make the bowl vegetarian from the garnish onward. Choose vegetable broth and, if adding cheese, check that the queso fresco is made with vegetarian rennet. The soup is naturally dairy-free without the optional cheese, and it remains flavorful with extra cilantro and lime instead.

Serving Suggestions

Serve the soup hot in deep bowls, with a lime wedge at each place setting so everyone can adjust the acidity. A spoonful of queso fresco adds a salty, creamy contrast, while chopped cilantro gives the broth a fresh finish. For a vegan bowl, skip the cheese; sliced avocado can add a soft, rich texture without changing the soup’s seasoning.

For a fuller meal, serve the soup with crusty bread, toasted rolls, or warm corn tortillas for dipping. A simple salad of lettuce, tomato, and thinly sliced red onion also works well, particularly if dressed lightly so it does not compete with the soup. If the soup is the first course in a larger meal, serve smaller portions and keep the toppings modest. For lunch, a generous bowl with bread is usually enough because quinoa and potatoes make the broth substantial.

Set out extra lime, cilantro, and chile at the table rather than seasoning the entire pot aggressively. Diners can choose a brighter, spicier, or more herb-forward bowl, and the remaining soup stays balanced for later servings. If using queso fresco, crumble it over individual bowls immediately before serving; stirring it into the pot can make the broth cloudy and leave the cheese unevenly distributed.

Variations

Use other vegetables. Replace the cabbage with chopped kale or Swiss chard, adding sturdy greens with the potatoes and tender leaves during the last 5 minutes. Diced zucchini can replace some of the celery or carrot; add it with the corn and peas so it does not become too soft. If you use vegetables with very different cooking times, add them in stages rather than all at once.

Make it creamier. For a gently creamy finish, stir in ½ cup (120 ml) unsweetened, unflavored oat milk or dairy milk after the soup has finished simmering. Warm it over low heat without bringing the pot to a hard boil. This is a flexible variation, not necessary to the recipe, and it softens the bright, brothy character. A small amount of crumbled vegetarian queso fresco is another option if you want creaminess in individual bowls instead.

Change the grain. White quinoa cooks relatively quickly and keeps the soup light. Red or tricolor quinoa also works, though the grains may stay firmer and need a few extra minutes; check the package and taste before adding the quick-cooking vegetables. For a different texture, use ¾ cup (150 g) rinsed pearled barley, but expect a longer simmer and add broth as needed. Barley contains gluten, unlike quinoa.

Add beans for a heartier pot. Stir in one 15-ounce (425 g) can of drained and rinsed white beans or cannellini beans with the corn and peas. They need only to heat through, and their mild flavor suits the cumin, cilantro, and lime. Since canned beans can be salty, taste the soup before adding any extra salt.

Storage and Reheating

Cool leftovers promptly and refrigerate them within 2 hours in a covered container. The soup keeps for 3 to 4 days in the refrigerator. Quinoa and potatoes continue to absorb broth as the soup sits, so it will be thicker the next day; this is normal, and the grains may soften further during storage. For easier reheating, store the soup in portions and keep any extra lime, cilantro, or cheese separate until serving.

Reheat a portion in a saucepan over medium-low heat, stirring occasionally, until steaming throughout. Add a splash of water or vegetable broth if the texture has become too thick. For food safety, USDA guidance is to reheat leftovers to 165°F (74°C); check the center with a food thermometer. You can also microwave a covered portion, stirring halfway through and checking the temperature in more than one spot. Freeze the soup in airtight, freezer-safe containers for up to 2 months for best quality. Thaw overnight in the refrigerator and reheat as described; the potatoes and quinoa may be softer after freezing.

Frequently Asked Questions

Is this a traditional Peruvian soup?

It is inspired by Peruvian sopa de quinua, a family of soups built around quinoa, often with potatoes, vegetables, and herbs. Recipes differ by region and household, including the vegetables, seasoning, and whether dairy is used. This version uses aji amarillo as a distinctive Peruvian seasoning while keeping the base vegetarian and adaptable.

Do I have to rinse quinoa before cooking it?

Rinsing is a good habit unless the package clearly says the quinoa is pre-rinsed. It removes surface saponins that can give the grains a bitter or soapy note. A fine-mesh sieve prevents the small grains from washing down the drain; shake it well afterward so extra rinse water does not dilute the soup.

Where can I find aji amarillo paste?

Look for it in Latin American grocery stores or the international section of larger supermarkets. It is often sold in a jar or can. If it is unavailable, use the yellow bell pepper and small amount of cayenne or jalapeño listed in the instructions. The substitute gives the soup a similar warm color, but it will taste less fruity and less distinctly like aji amarillo.

Can I make the soup ahead?

Yes. Make it up to 3 days ahead and refrigerate it promptly, but expect the quinoa to absorb some of the broth. When reheating, loosen it gradually with water or vegetable broth, then add fresh lime and cilantro just before serving. If you want the grains and broth to stay more separate, cook the quinoa separately and stir it into each bowl or into the pot shortly before serving.

How can I make this recipe vegan?

The soup itself is vegan when made with vegetable broth and oil. Simply omit the optional queso fresco, or check that any cheese you use is made with vegetarian rennet if you are serving vegetarians who avoid animal rennet. Finish with more lime and cilantro, or add avocado at the table for a creamy topping.

Why did my soup become so thick?

Quinoa continues to take up liquid after cooking, and potatoes release some starch into the broth, so a thicker consistency is expected after standing or chilling. Stir in warm water or vegetable broth a little at a time until it reaches the consistency you like. Taste again afterward, since extra liquid can dilute the salt and lime.

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