Ensalada de Camarón (Shrimp Salad)
Veracruzans prize seafood salads made either with medleys of different kinds or with one particular variety of seafood. The version Zarela Martinez gives here, a good appetizer or first course, is based on her own happy experiences with many Veracruzan ensaladas de mariscos.
In dishes like this, garnished with raw onion, Martinez really values the freshness of Mexican onions, which are used much sooner after pulling than our common storage onions. Often, they are like the middling-sized pearly white onions with green tops still attached that you will find in some ethnic groceries as "bulb onions" or "spring onions" (don't confuse them with scallions). Red onions make a good substitute, especially the kind that are new looking and shiny, without papery skins.