Toss in lime, leave 5 minutes: Place in a bowl with onion, jalapeño, tomato, pepper and lime juice. Gently toss, then set aside for 5 minutes, mixing gently once.
Step 3
Add avocado then serve! Sprinkle over salt, then add avocado, coriander and olive oil. Gently stir, then serve immediately with corn chips (see in post for other ideas).
Step 4
Ceviche will be good for 20 minutes or so, then fish will start to overcook and firm up. Do not leave overnight (for food safety reasons).