Peruvian causa rellena is a chilled, molded dish of lime-seasoned yellow potatoes layered with a savory filling; this version pairs shredded chicken with avocado. It comes from Peru, where recipes vary by cook and region, and it works because the potatoes are bright with lime and ají amarillo while the creamy filling gives each slice a satisfying contrast.
Ingredients
- 2½ lb (1.1 kg) yellow potatoes, preferably papa amarilla; Yukon Gold potatoes are a practical substitute
- 1 lb (450 g) boneless, skinless chicken breasts
- 2 large eggs
- 1 tablespoon (15 g) fine salt for the potato cooking water, plus 1¼ teaspoons (7 g) for seasoning the potatoes
- ⅓ cup (80 ml) fresh lime juice, divided
- 2 tablespoons (30 ml) neutral oil or mild olive oil
- 3 tablespoons (45 g) ají amarillo paste
- ½ teaspoon (1 g) ground black pepper
- ⅓ cup (75 g) mayonnaise
- ⅓ cup (50 g) finely diced red onion
- 1 medium ripe avocado, about 5 oz (150 g), peeled and sliced
- 6 pitted black olives, halved, for garnish
- 4 small lettuce leaves, for serving
Papa amarilla, the intensely yellow potato commonly used for causa, can be difficult to find outside Peruvian or Latin American markets. Yukon Gold potatoes mash smoothly and make a good substitute, though the color and characteristic potato flavor will be milder. Ají amarillo paste brings fruity, gently hot pepper flavor; use the paste if available. If it is not, blend 1 small seeded yellow bell pepper with 1 seeded Fresno chile and a teaspoon of oil until smooth. That substitute is less distinctly Peruvian and may be milder or sharper depending on the chile. Lime juice should be freshly squeezed for the clearest flavor.
Instructions
- Set up the cooking. Put the eggs in a small saucepan and cover with cold water by about 1 inch (2.5 cm). Put the chicken in a second saucepan, cover with water by 1 inch (2.5 cm), and bring it just to a simmer. Reduce the heat so the water bubbles gently rather than boiling hard. Starting these while you prepare the potatoes keeps the work moving without rushing the cooling and assembly.
- Boil the potatoes. Scrub and peel the potatoes, cut larger ones into pieces roughly 2 inches (5 cm) across, and put them in a large pot. Cover with cold water, stir in the tablespoon of salt, and bring to a boil. Simmer for about 20–25 minutes, until a knife slides easily into the largest piece. Drain very well. Potatoes of different sizes may finish at different times, so remove small pieces earlier if they are already tender.
- Cook and check the chicken and eggs. Simmer the chicken for about 15–18 minutes, depending on thickness, then check the thickest part with a food thermometer. The USDA FSIS safe minimum internal temperature for poultry is 165°F (74°C). If it has not reached that temperature, continue cooking and check again. For the eggs, cook at a gentle boil until the yolk and white are firm, about 10–12 minutes, then transfer them to cold water. Peel once cool. Drain the chicken and let it cool for about 15 minutes before shredding; the potatoes can cool during this same wait.
- Season the potato base. While the potatoes are still warm, press them through a potato ricer or mash them thoroughly until smooth. Avoid using a blender or food processor, which can make potatoes gluey. Stir in the oil, ¼ cup (60 ml) of the lime juice, ají amarillo paste, 1¼ teaspoons (7 g) salt, and the black pepper. Taste a small spoonful and adjust with the remaining lime juice or a pinch of salt. The mixture should taste pleasantly tangy and seasoned on its own, since the filling will soften its flavor.
- Make the chicken filling. Shred the cooled chicken into small strands with two forks or your fingers. In a bowl, mix it with the mayonnaise, diced red onion, and remaining 1 tablespoon (15 ml) lime juice. Season with a small pinch of salt if needed. Keep the chicken pieces fairly fine so the layers hold together when sliced; large chunks can push out of the sides.
- Prepare the mold and first layer. Line an 8-inch (20 cm) round cake pan or springform pan with plastic wrap, leaving enough overhang to cover the top. You can also use a metal ring mold on a serving plate. Divide the potato mixture in half. Press one half into an even layer in the bottom of the pan, using a spoon or lightly oiled fingertips. Make the layer level, but do not compact it so firmly that the potato turns dense.
- Add the filling and finish the layers. Arrange the avocado slices over the potato, overlapping them slightly, then spread the chicken mixture evenly on top. Add the remaining potato mixture in small portions and gently spread it to cover the chicken all the way to the edges. Smooth the top without pressing hard. Cover and refrigerate for 30 minutes so the causa firms enough to unmold and cut neatly.
- Unmold and garnish. Lift the causa out using the plastic overhang, or release the sides of the springform pan. Invert onto a serving plate if you used a lined cake pan, then peel away the plastic. Cut the peeled eggs into quarters or slices and arrange them on top with the olive halves. Serve on lettuce leaves, or place the lettuce beside the slices. Use a sharp knife wiped clean between cuts for tidy portions.
Tips
- Keep the potatoes dry. Drain them thoroughly and let steam escape for a minute before mashing. Excess water makes the potato layer loose and harder to shape. If your mash seems unusually soft, let it cool a little longer before assembling rather than adding flour or extra oil.
- Season in stages. Ají amarillo pastes differ in saltiness and heat, and limes vary in acidity. Mix in most of the lime first, taste, then add more a teaspoon at a time. The finished potato should be lively but not so sour that it overwhelms the chicken.
- Cut the filling small and spread gently. Fine chicken shreds, evenly distributed avocado, and level layers help each slice hold its shape. If the avocado is very soft, mash it lightly with a little lime instead of using slices, then spread it in a thin layer.
- Do not skip the chill. Thirty minutes is enough to help this small molded causa hold together, but a warm potato mixture can soften the avocado and filling. Let the potatoes and chicken cool before layering, and keep the finished dish refrigerated until close to serving.
Serving Suggestions
Serve causa rellena cold or cool, not piping hot. It makes a substantial lunch or a first course: cut the mold into six wedges and place each on a lettuce leaf, with extra lime wedges at the table. A simple side of sliced tomato, cucumber, or lightly dressed greens adds freshness without competing with the potato and ají. For a larger meal, serve smaller slices alongside grilled vegetables or a bowl of soup.
The dish is already rich and filling, so keep accompaniments simple. A few additional olives, chopped parsley, or a little finely sliced red onion can be offered as garnishes. If serving it for a gathering, unmold the whole causa shortly before people sit down and cut it at the table or just before plating. This preserves the clean layers and keeps the cut edges from drying out.
Variations
Tuna causa is a familiar alternative to chicken. Replace the cooked chicken with 2 cans (about 10 oz/280 g total drained weight) of tuna, flaked and mixed with the mayonnaise, onion, and lime. Causa is also made with other fillings, including shrimp or vegetables, and home recipes differ in their seasoning and layer arrangement. For seafood fillings, cook seafood fully and chill it promptly before assembly; fish should reach 145°F (63°C) when checked with a food thermometer.
For a vegetarian version, replace the chicken with 1½ cups (250 g) cooked and drained peas, finely diced carrots, and green beans, mixed with the mayonnaise and onion. You can also use mashed, seasoned chickpeas for a firmer, more substantial filling. For a little more heat, add ají amarillo paste a teaspoon at a time to the potato mixture rather than adding a hot sauce that could thin it. To make individual portions, form the same layers in small ring molds or clean, straight-sided cups and chill them before unmolding.
Storage and Reheating
Because this causa contains cooked chicken, mayonnaise, and avocado, refrigerate it within 2 hours of assembling or serving. Keep it covered in the refrigerator at 40°F (4°C) or colder and use it within 3 days for best quality. The avocado may darken slightly where it meets air, and cut edges can soften, but the dish should remain chilled. Do not leave it on a buffet for more than 2 hours, or more than 1 hour when the room is above 90°F (32°C).
Causa rellena is intended to be served chilled, so do not reheat the assembled mold; warming it can loosen the potato and make the avocado and mayonnaise unpleasant. If you have kept chicken filling separately and want to serve that filling warm in another dish, reheat it to 165°F (74°C), the USDA FSIS safe temperature for leftovers, checking with a food thermometer. Freezing the assembled causa is not recommended because potatoes and avocado can become watery or grainy after thawing.
Frequently Asked Questions
Can I make causa rellena ahead?
Yes. You can cook the potatoes and chicken, prepare the filling, and assemble the layers up to a day ahead. Cover the mold well and refrigerate it. For the freshest appearance, add the egg and olive garnish shortly before serving, and keep the causa cold until you are ready to cut it.
What kind of potato is best for causa?
Peruvian papa amarilla is traditional and gives the potato layer its deep yellow color and distinctive flavor. Yukon Gold is a dependable substitute in many grocery stores because it mashes smoothly and is not overly watery. Avoid waxy potatoes that stay firm and lumpy, and avoid overworking any variety after mashing.
Is causa rellena spicy?
It is usually mildly warm rather than intensely hot, but the heat depends on the ají amarillo paste and how much is used. Start with the recipe quantity, taste the potato mixture, and add more gradually if you want stronger chile flavor. A bell pepper and Fresno chile substitute can vary in heat, so taste that mixture before adding it.
Why is my causa too soft to slice?
Common causes are potatoes that were not drained well, a filling with too much liquid, or assembling the layers while they were warm. Next time, let the drained potatoes steam briefly, cool the potato mixture and chicken before layering, and chill the finished mold for the full 30 minutes. A sharp knife and a clean cut between slices also help.
Can I serve causa without a mold?
Yes. Shape it as a low rectangular or round mound on a platter, or make individual portions using a cup or ring mold. For a free-form version, spread the bottom potato layer carefully, add the filling without going too close to the edge, and cover it with the remaining potato. It may look more rustic, but the flavor and layered effect are the same.
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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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