Rick Bayless of Frontera Grill in Chicago serves Mexican seafood in 3 preparations; this one is for ceviche.:) Ceviches typically use lime juice to "cook" raw fish. In our version, we simmer the seafood to give it a crisp bite, then prepare it as you would a traditional raw-fish ceviche. Coastal Living Magazine, November 2008 edition. Text and recipes by Kathryn Jessup.Chill from 1 to 6 hours, so that the flavors can marry and be cooked.