Temperature: Cold
Where: Cocina criolla / cevichería
Price range: S/15–35
What causa limeña is
Causa is a cold layered dish built from mashed yellow potato seasoned heavily with lime juice and ají amarillo, with a filling in the middle, usually chicken salad, tuna, shrimp, or crab with avocado. A slice of egg and a black olive go on top.
It looks like a small terrine: bright yellow potato above and below, cool filling in between. The potato is dense and tangy from the lime, the filling brings creaminess, and the ají gives a low background warmth.
Cold, and made with yellow potato
It's one of the few Peruvian dishes served cold, which suits Lima's grey, humid afternoons. It's also built on papa amarilla, one of dozens of native Peruvian potatoes. If you've only had supermarket potatoes, you'll notice the difference.
The classic versions
The filling is what defines each version:
- Causa de pollo, with shredded chicken, mayo, lime and a little mustard. The most common.
- Causa de atún, with canned tuna and mayo. Cheap and found everywhere.
- Causa de camarones or de langostinos, with shrimp. Pricier.
- Causa de cangrejo, with crab, often the most expensive on the menu.
- Causa rellena con palta adds a layer of avocado.
Most restaurants serve causa as a starter (entrada). At lunch you'll see it as one of the entrada options on the menú del día.
If raw fish worries you, causa is an easy first cold dish: the potato is fully cooked, the lime is generous, and a busy lunch spot goes through its causa fast.
How to order it
Say "causa de" plus the filling: "causa de pollo, por favor". If you want it as a main rather than a starter, ask for it as "plato fuerte". Most places will serve a larger portion.
What it should cost
| Where | Plato (S/) |
|---|---|
| Menú del día (entrada) | included (S/15–22 total) |
| Standard restaurant (starter) | 18–28 |
| Upscale / cevichería (with seafood) | 35–60 |
How to eat it
Causa is built in layers, but on the plate you should mix them. Cut a vertical slice with your fork so each bite has potato top, filling, and potato bottom. Almost every restaurant brings an ají amarillo cream on the side; add a little.
Drink chicha morada, sparkling water or a beer.
Origins
Peru is where the potato comes from, with over 4,000 native varieties, and causa is built on that. The base, boiled yellow potato mashed cold with lime, ají amarillo and oil, has a pre-Columbian feel, but the layered form took shape in 19th-century Lima.
Nobody agrees on the name. A popular story ties it to the War of the Pacific (1879–1884), when Lima women sold the dish to raise money for "la causa", the soldiers' cause. The likelier source is the Quechua kausay, sustenance.
When to try it
On a grey afternoon, as a starter. It pairs well with a ceviche: causa first, ceviche as the main.