Portuguese Collard Green Soup with Potatoes and Chouriço

Portuguese collard green soup, often associated with caldo verde, is a comforting soup of tender greens, potatoes, olive oil, and smoky sausage. This version uses finely sliced collards and chouriço, with some of the potatoes mashed into the broth to make it pleasantly silky; family and regional versions vary in their greens, sausage, and thickness.

Ingredients

1 tablespoon (15 ml) extra-virgin olive oil
8 ounces (225 g) fully cooked Portuguese chouriço, linguiça, or another smoky cured sausage, sliced into thin rounds
1 medium yellow onion (about 5 ounces / 150 g), finely chopped
3 garlic cloves (about 9 g), minced
1 1/2 pounds (680 g) Yukon Gold or russet potatoes, peeled and cut into roughly 1/2-inch (1.25 cm) pieces
6 cups (1.42 L) low-sodium chicken broth
2 cups (475 ml) water
1 bay leaf (about 0.2 g)
1/2 teaspoon (3 g) fine salt, plus more to taste
1/4 teaspoon (0.5 g) freshly ground black pepper
1 large bunch collard greens, about 12 ounces (340 g) after removing tough stems, thinly sliced into ribbons (about 8 loosely packed cups)
1/8 teaspoon (0.3 g) red pepper flakes, optional
1 tablespoon (15 ml) extra-virgin olive oil, for finishing

Instructions

Prepare the greens and vegetables. Wash the collards well, especially near the stem ends, and dry them. Strip away the thick central ribs; stack several leaves, roll them into a tight bundle, and slice crosswise into very thin ribbons. Finely slice the sausage, chop the onion, mince the garlic, and cut the potatoes into similar-sized pieces so they soften evenly. This hands-on preparation takes about 25 minutes, depending on how quickly you work.
Brown the sausage. Warm 1 tablespoon olive oil in a large heavy-bottomed pot or Dutch oven over medium heat. Add the sausage in an even layer and cook for about 5 minutes, turning once or twice, until its edges are lightly browned and it has released some flavorful fat. Transfer it to a plate, leaving the oil in the pot. If using fresh, raw pork sausage rather than fully cooked chouriço, crumble it and cook it through; USDA FSIS gives 160°F (71°C) as the safe minimum internal temperature for ground pork, checked with a food thermometer.
Soften the aromatics. Add the onion to the pot and cook for about 5 minutes, stirring often, until softened but not deeply browned. Stir in the garlic and optional red pepper flakes and cook for 30 seconds, just until fragrant. If the pot looks dry, add a spoonful of broth rather than letting the garlic scorch.
Simmer the potatoes. Add the potatoes, broth, water, bay leaf, salt, and black pepper. Bring the liquid to a boil, then lower the heat to maintain a steady, gentle simmer. Cover the pot partly and cook for 20 to 22 minutes, stirring once or twice, until the potatoes are very tender when pierced with a fork. A hard boil can break the potatoes apart before they soften evenly, so keep the bubbling moderate.
Make the broth creamy. Remove the bay leaf. Use a potato masher to crush some of the potatoes against the side of the pot, leaving plenty of small chunks for texture. For a smoother base, scoop out about 2 cups (475 ml) of potatoes and broth, blend until smooth, then return the mixture to the pot. Use care with hot liquid and do not fill a countertop blender more than halfway; vent the lid to let steam escape. Return the browned sausage to the soup.
Cook the collards and finish. Stir in the sliced collards and simmer uncovered for 8 to 10 minutes, until the ribbons are tender but still green. Stir in the finishing tablespoon of olive oil, taste, and add salt or pepper as needed. The soup should be loose enough to spoon easily; add a little hot water or broth if it has thickened more than you like. Serve hot.

Tips

Slice the collards very thinly. Fine ribbons are characteristic of this style of soup and cook quickly. Thick strips take longer to tenderize and can feel stringy. A sharp knife makes the job easier; remove the firm ribs rather than trying to slice through them.
Choose sausage with the right seasoning. Portuguese chouriço or linguiça brings smoke, salt, and paprika-like savoriness. If neither is available, Spanish cured chorizo works, though it can taste more strongly spiced. Smoked kielbasa is another practical option; add a pinch of smoked paprika if you want a closer smoky note. Check the package, since some sausages are raw and need to be cooked through.
Season after the sausage and broth have simmered. Cured sausage and packaged broth can both be salty, and their saltiness concentrates as soup cooks. Starting with the measured 1/2 teaspoon and adjusting at the end helps avoid an overly salty pot.
Keep the texture in your hands. Mashing some potatoes thickens the soup without cream. Mash less for a brothy bowl or blend a portion for a smoother base, but avoid blending the collards: they are best left as distinct ribbons.

Serving Suggestions

Serve the soup in warmed bowls with crusty bread for dipping. A simple country loaf, Portuguese-style bread, or a sturdy sourdough all work well. Put extra olive oil and black pepper on the table so everyone can finish their own serving. If the sausage is particularly rich, a crisp green salad dressed with vinegar balances the bowl without making the meal complicated.

This soup can be a substantial first course or the main part of a casual supper. For a fuller spread, serve it alongside roasted vegetables or a plate of olives. Include a little sausage and plenty of greens in each bowl rather than spooning only broth; the balance of potatoes, collards, and sausage is what makes each serving satisfying.

Variations

Use kale instead of collards. Curly or lacinato kale is a common practical alternative. Remove tough ribs and slice it thinly; it may soften in about 5 to 8 minutes, so begin checking earlier than you would with collards. The flavor will be a little more earthy and the leaves may be less silky.

Make it vegetarian. Leave out the sausage and use vegetable broth. To build savory flavor, brown 8 ounces (225 g) sliced mushrooms in the olive oil before adding the onion, and season the finished soup with a little extra black pepper. Smoked paprika can suggest the sausage’s smoky character, but it will not reproduce the same cured-meat flavor.

Adjust the thickness. For a rustic, chunky soup, mash only a few potato pieces. For a smoother soup, blend about one-third of the potato base before adding the collards. Avoid pureeing the entire finished pot unless you prefer a uniform texture; the sliced greens and sausage are traditionally visible in the bowl.

Try another potato or sausage. Yukon Gold potatoes give a buttery, creamy texture, while russets break down more readily and make a thicker broth. Linguiça is a close alternative to chouriço. If using a mild sausage, a small pinch of smoked paprika can add warmth, but start modestly so it does not overpower the greens.

Storage and Reheating

Refrigerate leftover soup within 2 hours of cooking in shallow, covered containers. It keeps for 3 to 4 days in the refrigerator. The potatoes absorb liquid as the soup sits, so it may be thicker the next day; stir in a splash of water or broth when reheating. The greens will soften further, but the soup remains enjoyable.

Reheat only the portion you plan to eat on the stovetop over medium-low heat, stirring occasionally, until steaming throughout. For food safety, USDA FSIS recommends reheating leftovers to 165°F (74°C); check with a food thermometer. You can also microwave a covered bowl, stirring partway through and checking the temperature in more than one spot. Freeze cooled soup in airtight freezer-safe containers for up to 2 to 3 months for best quality. Leave a little room at the top for expansion, thaw overnight in the refrigerator, and reheat as above. Do not store the soup at room temperature or attempt to preserve it by canning.

Frequently Asked Questions

Is Portuguese collard green soup the same as caldo verde?

Caldo verde is a well-known Portuguese soup made with potatoes, finely sliced greens, and often sausage. Names and recipes vary by household and region, and the greens may be collards, kale, or another suitable leaf. This recipe follows that familiar potato-and-greens approach without claiming to represent every version.

Can I use frozen collard greens?

Yes. Thaw them and drain away excess water before adding them. Frozen greens are usually already cut, but their pieces may be larger than the fine ribbons used here; chop them smaller if needed. Add them near the end and simmer until hot and tender, checking after about 5 minutes because frozen greens can cook at a different rate.

Do I have to peel the potatoes?

No. Thin-skinned Yukon Gold potatoes can be scrubbed and left unpeeled for a more rustic soup. The skins add texture and may keep some potato pieces intact. Russets have thicker skins and tend to make a smoother, starchier base, so peeling them usually gives a more even texture.

Can I make the soup ahead?

Yes. Make it up to 3 or 4 days ahead and refrigerate it promptly. The broth thickens as the potatoes absorb liquid, so loosen it with water or broth while reheating. For the brightest green color and a slightly firmer texture, you can prepare the potato base ahead and add freshly sliced collards shortly before serving.

What if I do not have an immersion blender?

You do not need one. A potato masher works well and is the easiest way to keep some chunks in the soup. For a smoother result, carefully transfer a portion of potatoes and broth to a countertop blender, blend with the steam vent open, and stir it back into the pot.

Is this soup gluten-free?

The potatoes, collards, and other basic ingredients are naturally gluten-free, but packaged broth and sausage can contain added ingredients or be processed with cross-contact. Check their labels if you need to avoid gluten, and choose products specifically labeled gluten-free when necessary.

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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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