Prepare the chicken and vegetables. Place the whole chicken and vegetables in the multicooker bowl, add peppercorns, thyme, garlic, bay leaf and juniper. Turn on the "stewing" mode for 7 hours.
Grind the ingredients. Remove the chicken and vegetables from the multicooker, then mash with the onion and carrot. Add nutmeg, salt and ground black pepper. Pour in the broth formed during stewing, stir.
Store the rillettes. Transfer the chicken rillettes into glass jars, seal with lids, and refrigerate for 2 days.