Dice ripe serrano peppers: Remove seeds and ribs if milder mix is wanted
Add to onion mixture.
Squeeze fresh lime juice, add Lemoncello®
Cut scallops into 4 pieces each. Peel and devein shrimp
Add shrimp, scallops, and lime mixture to bowl: Bowl must be nonreactive, stainless, glass, or ceramic.
Place mixture into refrigerator for 2 hours or more until shrimp and scallops have firmed up.
While waiting for Ceviche to firm up:
Chop cilantro and place into container.
Peel, dice 2 medium avocados, and place into container.
Peel and dice mango, place into container with cilantro and avocados.
Add 2 Tbsp extra virgin olive oil to mixture.
Once scallop mixture has firmed up.
Mix all ingredients together in large container and toss in the tomatos
Check seasonings and serve with lettuce or tortilla chips