Step 1

Remove if the skin from the salmon filet if it is still intact and run your fingers over the filet to check for and remove any embedded bones. Use tweezers if necessary.

Step 2

Chop salmon into 1/2-inch pieces. Place in a glass or stainless-steel bowl. Add lime juice and toss until evenly coated. Cover and refrigerate until the fish is opaque and "cooked" through, about 4 hours.

Step 3

Drain off and discard excess lime juice. Add onion, carrots, tomatoes, jalapeños, and cilantro and toss until evenly coated. Season to taste with salt and more fresh lime juice if desired.

Step 4

Serve on tostadas or with tortilla chips or saltine crackers, passing mayonnaise, hot sauce, and sliced avocado separately. Or, divide ceviche among small clear-glass bowls, wineglasses, or martini glasses.