The causa rellena family — elaborations on the basic causa technique (PE-03) — encompasses a wide range of fillings and presentations. The principle is constant: cold ají amarillo-seasoned potato as the structural medium, a filling as the flavour centre. [See PE-03 for the foundational technique]. Key variations: **Causa de atún (tuna):** The most common — canned or fresh tuna in mayonnaise with ají amarillo and red onion. The tuna filling's fat resonates with the potato's oil-based structure. **Causa de camarones (shrimp):** Fresh shrimp in mayonnaise — requires the shrimp to be cooked precisely (2–3 minutes in salted water) and chilled before incorporation. **Causa de pulpo (octopus):** The octopus must be tenderised before use — either pressure-cooker technique or the Spanish "terrified octopus" cold-water dip method before poaching.
Peru