3 While the salmon is cooking, prep the other ingredients. Cut the avocados in half. Remove the seeds. Score the inside of the avocados with a small knife in a cross hatch pattern. Scoop out the avocado pieces and add them to the bowl with the cut mango pieces. Add the minced red onion, serrano chile, and lime juice to the bowl. Sprinkle with a little salt. Gently fold the ingredients together.