Chef Margarida
Açorda de Bacalhau
Two Portuguese icons meet in one humble bowl: the bread soup of Alentejo embracing flakes of salt cod. Peasant genius that proves scarcity breeds invention, that pão and bacalhau together can feed the soul.
Culinary Explorer
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Sopa de Agrião
Created by
Portugal's other green soup, silky with potatoes and sharp with peppery watercress. Simpler than caldo verde, just as worthy of your table, proof that the best cooking needs the fewest ingredients.
Soups & Stews
Portuguese
Weeknight
Budget Friendly
15 min
Active Time
35 min cook•50 min total
Yield6 servings
Caldo verde gets all the glory. Every tourist who visits Portugal eats it once and thinks they understand our green soups. But we have others. Sopa de agrião is quieter, sharper, a soup that bites back.
Watercress grows wild near streams and rivers across Portugal. Before it became a salad green for fancy restaurants, it was food for people who knew where to look. My grandmother picked it near the ribeira outside Évora when she was a girl. Free food. The best kind. She'd come home with bunches of it wrapped in her apron, dirt still clinging to the roots.
The technique here is simple. Potatoes cooked until they surrender, blended into silk, then the agrião stirred in at the last moment. That last moment matters. Leave the watercress too long and it turns army green, loses its pepper, becomes something tired. You want it still bright, still alive, still with that mustard bite that wakes up your mouth.
This is weeknight food. Budget food. A soup you make when you have potatoes, a bunch of greens, and good olive oil. Pão, azeite, sempre. The oil at the end isn't optional. It's what makes the soup complete.
Watercress has grown wild along Portuguese waterways since before recorded history, making agrião soups among the country's most ancient preparations. Unlike caldo verde, which is specifically tied to the Minho region and its couve galega, sopa de agrião appears wherever watercress grows, from the streams of Alentejo to the rivers of Trás-os-Montes. It was traditionally a spring soup, made when the first tender shoots appeared.
The technique, the tradition, and the story behind every dish.
Discover Culinary ExplorerIngredients
floury potatoes
Quantity
1 kg
peeled and cut into chunks
fresh watercress (agrião)
Quantity
2 large bunches (about 300g)
tough stems removed
onion
Quantity
1 medium
roughly chopped
garlic cloves
Quantity
3
smashed
extra virgin olive oil (azeite)
Quantity
1/4 cup, plus more for drizzling
water or light chicken broth
Quantity
1.5 liters
sea salt
Quantity
1 teaspoon, plus more to taste
black pepper
Quantity
freshly ground, to taste
| Ingredient | Quantity |
|---|---|
| floury potatoespeeled and cut into chunks | 1 kg |
| fresh watercress (agrião)tough stems removed | 2 large bunches (about 300g) |
| onionroughly chopped | 1 medium |
| garlic clovessmashed | 3 |
| extra virgin olive oil (azeite) | 1/4 cup, plus more for drizzling |
| water or light chicken broth | 1.5 liters |
| sea salt | 1 teaspoon, plus more to taste |
| black pepper | freshly ground, to taste |
Equipment Needed
- •Heavy 4-liter pot
- •Immersion blender or standard blender
Instructions
- 1
Build the base
In a heavy pot, warm the olive oil over medium-low heat. Add the onion and garlic and cook gently until soft and fragrant, about 8 minutes. Don't let them color. You're building a foundation here, not seeking caramelization. The soup should taste clean and green, not sweet.
This isn't a full refogado like you'd make for a meat stew. Gentle is the word. You want aromatics, not color. - 2
Cook the potatoes
Add the potato chunks, water, and salt to the pot. Bring to a boil, then reduce to a steady simmer. Cook until the potatoes are completely falling apart, about 25 minutes. They should offer no resistance when you press them against the side of the pot. This is not the time for al dente. You want them dissolving.
- 3
Blend until silky
Remove the pot from heat. Using an immersion blender, purée the soup until completely smooth. It should be silky, almost velvety. If you don't have an immersion blender, work in batches with a regular blender, but be careful with hot liquids. Return to low heat.
Avó Leonor used a potato masher and elbow grease. The texture was never quite as smooth, but the soup was always good. Use what you have. - 4
Add the watercress
Reserve a handful of the prettiest watercress leaves for garnish. Add the rest to the hot soup all at once. Stir for just 30 seconds to 1 minute, until the leaves wilt but keep their bright green color. Remove from heat immediately. The residual heat will finish the cooking. Overcook the agrião and you lose the peppery bite that makes this soup worth eating.
- 5
Serve with good oil
Taste and adjust the salt. Ladle into warm bowls. Drizzle each portion generously with your best olive oil. Scatter a few reserved watercress leaves on top. A few grinds of black pepper. Serve immediately with crusty bread for dipping. This is a soup that wants to be eaten hot, while the agrião still has life in it.
Chef Tips
- •The quality of your olive oil matters here more than almost anywhere else. You're drizzling it raw on top. Use something you'd be happy to taste straight from a spoon.
- •If you can only find watercress with thick, woody stems, strip all the leaves and tender tops. The thick stems turn stringy when blended.
- •Some families add a single floury potato at the end without blending for texture. Avó Leonor called this lazy. She wasn't wrong, but it's also not bad.
- •This soup doesn't reheat well. The watercress loses its brightness. Make only what you'll eat.
Advance Preparation
- •The potato base can be made ahead and refrigerated for up to 2 days. Reheat before adding fresh watercress.
- •Wash and dry the watercress up to a day ahead. Store wrapped in damp paper towels in the refrigerator.
- •Do not add the watercress until just before serving. This step cannot be done ahead.
Frequently Asked Questions
Nutrition Information
1 serving (about 400g)
Calories
205 calories
Total Fat
9 g
Saturated Fat
1 g
Trans Fat
0 g
Unsaturated Fat
8 g
Cholesterol
0 mg
Sodium
415 mg
Total Carbohydrates
27 g
Dietary Fiber
4 g
Sugars
2 g
Protein
4 g
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