Rich, fatty cotechino sausage nestled in crusty bread is northern Italian winter comfort. A high protein carnivore mediterranean sandwich, traditionally enjoyed by families on New Year's Day.
Place the cotechino sausage in a large pot of cold water and bring it to a gentle simmer over medium-low heat.
Simmer the sausage for 50-60 minutes, ensuring the water stays just below boiling to prevent the casing from bursting.
Remove the sausage from the water carefully, let it rest for 5 minutes, then peel off the casing with a sharp knife.
Slice the warm cotechino into thick rounds and lay them on the bottom half of each crusty Italian roll.
Top with whole grain mustard, sprinkle with fresh parsley and black pepper, then crown with the top half of the roll and serve immediately while hot.