Chicken Sausage without peas

1 1/2 pound/675 grams chicken thigh meat, diced and thoroughly chilled 225 grams schmaltz, frozen (or a scant cup if you don't have a scale, but shame on you)[...]

1 lemon , halved 2 small onions , peeled and quartered 1/2 cup olive oil 2 teaspoons dry mustard 1 tablespoon dried sage 1 tablespoon Worcestershire sauce[...]

1 -2 yellow onion , peeled and cut into 8 pieces 1/2 cup olive oil (not extra virgin) 2 teaspoons English mustard 1 tablespoon dried sage ground pepper 1[...]