A salad you've never made before

The salad for the festive table is very tasty, the perfect combination of ingredients!
Ingredients:
400 - 500 grams of chicken liver (boil in salted water for 10 minutes)
500 grams of champignon mushrooms
1 - 2 onions
200 grams of Korean carrots (pickled)
200 grams of canned pineapple
Mayonnaise