1 pound fresh Pacific halibut or other firm-fleshed fish
1 teaspoon kosher salt
3 tablespoons fresh lime juice
2 ripe avocados, peeled and pitted
3/4 cup green olives, sliced
1/2 cup tomatillos, diced
1/4 cup onion, very finely chopped
1/4 cup fresh cilantro leaves
1 jalapeño, stemmed, seeded, and minced (optional)
2 tablespoons olive oil
Tostadas or tortilla chips
Ingredient info: To ripen avocados more quickly, place them in a sealed paper bag with an apple or a banana for 24 hours.