Use ripe pineapple for best flavor. Adjust jalapeño heat to taste. Fresh lime juice is essential. Chill salsa for at least 15 minutes before serving. Soak red onion in cold water for milder flavor if desired. Serve with chips, grilled chicken, fish tacos, or as a topping for salads and bowls. Store leftovers in an airtight container refrigerated up to 3 days.