Causa (Layered Seasoned Potato)

History

Causa, as set down here, is a dish built on the Andean potato: the boiled tubers are peeled, mashed to a puree, and worked with plenty of oil, vinegar, salt, and ground aji — the native chili — to taste. The seasoned mass is spread like a cake over a bed of fresh lettuce, then crowned with onions sliced into thin rounds and pickled three hours in vinegar, oil, pepper, oregano, and more aji, and finished with a composed garnish of sliced hard-boiled eggs, squares of fried fish or cooked shrimp, slivers of fresh cheese, sweet potato (camote or batata), olives, and radishes, with lettuce hearts scattered over the top "like shrubs on a meadow." The contributor, writing from Buenos Aires, plays on the name — "Causa!" she exclaims, a cause of joy — and adds that the dish calls for a glass of chicha, the fermented maize drink, to follow.

The dish itself is Peruvian and old. Causa is documented as an entree of pre-Columbian origin, resting on the potato and aji that were Andean staples long before European contact, and its name is usually traced to the Quechua kausay, glossed as "life," "necessary sustenance," or "what feeds" — a name that fits the potato's role as the mainstay of highland diets. A competing folk story derives the name instead from the Spanish por la causa, "for the cause," telling of the dish sold on Lima's street corners or pressed on soldiers to support a patriotic cause; the sources that carry it treat it as one hypothesis among several rather than settled fact, and the two accounts remain contested. What is clearer is that the layered form recorded here is a criollo one, in which Indigenous potato and aji meet ingredients and techniques the Spanish introduced — the vinegar pickling, the olives, the fried fish. In the modern standard, causa limena is bound with lime and built on yellow potato; this 1890 version seasons instead with vinegar and predates that lime-and-yellow-potato canon, a reminder that the "traditional" dish had not yet hardened into a single recipe. The page keeps the method and the cook's delight in it, but not where this particular composed version was eaten, nor how a contributor writing from Buenos Aires came to record a Lima dish — silences the recipe leaves open.

Ingredients

• potatoes
• oil
• vinegar
• salt
• ají (Andean chili pepper), ground
• lettuce leaves, fresh and tender
• onions, cut in very thin rounds
• vinegar
• oil
• pepper
• powdered oregano
• ají (Andean chili pepper)
• hard-boiled eggs, sliced
• fried fish, in squares
• cooked shrimp (camarones)
• fresh cheese, in slivers
• camotes or batatas (sweet potatoes)
• olives
• radishes (rabanitos)
• lettuce hearts (cogollitos)

Instructions

1. Boil, peel, and mash the potatoes to a purée; mix in plenty of oil, vinegar, salt, and ground ají to taste.
2. Lay fresh, tender lettuce leaves in the serving dish and spread the potato mass over them like a cake.
3. Prepare a topping sauce of thinly sliced onions pickled three hours in vinegar, oil, pepper, powdered oregano, and optional ají.
4. Cover the causa with the pickled onions and garnish with sliced hard-boiled eggs, squares of fried fish or cooked shrimp, slivered fresh cheese, camotes or batatas, olives, and radishes.
5. Scatter lettuce hearts over the top like shrubs on a meadow.