Causa Limeña de Atún
(cow-sah lee-men-yah deh ah-toon)
Para Picar y Empezar (The Front Porch Snacks & Starters)
If you want to understand Peruvian home cooking, look no further than the potato. To the Incas, 'kausay' meant life. Born from wartime necessity and perfected over generations, this chilled potato and tuna terrine is the ultimate front-porch starter. It's built in strata—a vibrant dough of mashed potatoes, sharp citrus, and ají amarillo, stuffed with creamy tuna and avocado. The secret to recreating that authentic, buttery Lima texture in an American kitchen is simple but absolutely non-negotiable: boil Yukon Golds in their jackets, and mash them while they are blistering hot. Let them cool first, and they turn to glue.
Ingredients
- Yukon Gold potatoes2 lb
- ají amarillo paste4 tbsp
- neutral vegetable oil1/4 cup
- Key lime juice1/4 cup
- kosher salt1 1/2 tsp
- black pepper1/4 tsp
- canned tuna10 oz
- mayonnaise1/2 cup
- red onion1/4 cup
- fresh cilantro1 tbsp
- Key lime juice1 tsp
- Hass avocado1 large
- large eggs2 large
- Kalamata or Peruvian Botija black olives1/4 cup
Method
- 01
Boil the potatoes whole in their jackets.
Place the unpeeled potatoes in a large pot and cover them with cold water. Add a heavy pinch of salt, bring to a boil over medium-high heat, and simmer until a knife easily pierces the center, about 25 to 30 minutes.
- 02
Peel and mash the potatoes while steaming hot.
This is the single most important rule of causa. Using a clean kitchen towel to protect your hands, slip the skins off the hot potatoes and immediately pass them through a potato ricer or mash them until completely smooth. Spread them out slightly in the bowl and let them sit for 15 minutes to release excess steam and cool.
- 03
Mix the tuna filling.
While the potatoes cool, combine the flaked tuna, mayonnaise, red onion, cilantro, and 1 teaspoon of lime juice in a bowl. Mix until well combined and creamy, then season to taste with salt and pepper.
- 04
Knead the potato masa.
Once the mashed potatoes have cooled to room temperature, add the ají amarillo paste, vegetable oil, 1/4 cup Key lime juice, kosher salt, and black pepper. Dive in with clean hands and knead the mixture like a soft dough until it is smooth, pliable, and bright yellow.
- 05
Assemble the causa in layers.
Lightly oil a 3-inch pastry ring or line a small loaf pan with plastic wrap. Press half of the potato dough firmly into the bottom. Arrange the avocado slices in an even layer and sprinkle lightly with salt. Spread the tuna mixture smoothly over the avocado, then cap with the remaining potato dough, pressing down gently to compact the layers.
- 06
Chill thoroughly before serving.
Cover tightly with plastic wrap and refrigerate for at least 1 to 2 hours. This resting time allows the starches to set and the citrus and chili flavors to marry. Carefully unmold onto a serving platter, garnish with the quartered hard-boiled eggs and black olives, and serve chilled.
Notes
Sourcing Ají Amarillo.
Ají Amarillo is the soul of Lima's cuisine. You can easily find jars of the bright yellow paste in the international aisle of standard US supermarkets or local Latin grocers.
Limes matter.
The native Peruvian limón sutil is much more acidic than a standard Persian lime. Use Key limes to get the authentically sharp, aromatic punch this dish requires.
From Cook Peruvian in America.