Old Major Chicken Liver Mousse is a decadent spread that will take your party to the next level. Yes, pate, will turn your party up to eleven. We use Organ meat from pasture raised chicken, OM Bacon, cream, onions, and spices. Old Major Chicken Liver Mousse comes in 6oz glass jars. Serve with some pickled shallot or cornichon and grainy mustard on crostini.