“Cook” the shrimp in the lime juice. In a large stainless steel or glass bowl, combine the shrimp and lime juice. The shrimp should float freely in the juice; if not, add a little more juice. Cover and refrigerate until the shrimp are “cooked” to your liking—anywhere from 20 minutes for rare to several hours for well done, though after an hour or so the shrimp will begin to toughen. Drain, leaving about 1/3 cup of juice behind.
The add-ins. To the shrimp bowl, stir in the jicama, fresh coconut and green onions.
The dressing. In a blender, combine the coconut milk, mint, serranos and sugar. Blend until smooth. Add the dressing to the shrimp bowl and stir to combine. Taste and season with salt, usually about 1 teaspoon. If not serving right away, cover and refrigerate.
Spoon the coconut shrimp ceviche into serving dishes, strew with cilantro (or mint) leaves and you’re ready to serve.