La Mar
This reinvention of the traditional cebichería by chef Gastón Acurio is one of Lima's most popular lunch spots. The decor is minimal, but the menu offers a kaleidoscopic selection of delectable seafood dishes, including a trio de cebiches (various types of fish or seafood marinated in lime juice) and delectable causas (mashed-potato appetizers with seafood-and-mayonnaise fillings). Also try the arroz con mariscos (sautéed seafood and rice in a spicy cream sauce) or one of the catches of the day. The servings tend to be large, so you may want to share. The restaurant consistently ranks on San Pellegrino's list of Latin America's 50 best.
Reservations aren't accepted, so arrive before 1 or you'll wait an hour for a table.