Given the task definition and input, reply with output. In this task, you have to identify the named entities (NER) which are the ingredients required given its directions. Named entities are the names of the items without their quantity.

Layer the ingredients in order given., Spread mayonnaise, "sealing" to the edge of the bowl., Cover and chill 24 hours. This will keep several days if refrigerated and not stirred.
shredded lettuce, onion, bacon, frozen peas, mayonnaise, Swiss