Ceviche De Almejas Estilo Baja (Clam Ceviche From Baja)

Combine all of the ingredients except the cilantro and the ice. Put the ceviche into a covered ceramic bowl and refrigerate it until it's well chilled, about 3 hours.

Serve it immediately or let the flavors marry and serve it up to three days later.

To serve the ceviche Guaymas-style, save the clam shells and scrub them well. Fill shallow bowls or plates with crushed ice. Nest the half shells into the ice and heap them with the ceviche. Then garnish each plate with a sprig of cilantro.