Cut the pork shoulder and pork belly into 1-inch cubes, trimming excess connective tissue but keeping the fat—it’s key for flavor and juiciness. Place the cubes in a bowl and freeze for 1 hour to firm up (this makes grinding easier). Chilled meat and equipment (meat grinder) prevent the fat from smearing, which keeps the texture right.
Set up your meat grinder with a coarse grinding plate (6 mm or 1/4 inch). Grind the chilled pork into a large mixing bowl. If you’re skipping casings, you can stop here and move to seasoning. For a finer texture, grind it twice—but coarse is classic for sausage.
In a small bowl, combine salt, pepper, garlic, parsley, and other herbs and spices you want to use. Add them to the ground pork together with water, and mix thoroughly with your hands—about 2-3 minutes. This step ensures the spices are evenly distributed and the sausage holds together.
Pinch off a small piece of the mixture, form a tiny patty, and cook it in a skillet over medium heat. Taste it and adjust the seasoning if needed. Too mild? Add more spice. Too dry? Mix in a bit of very cold water. Keep your sausage meat cold in the fridge until you're ready to stuff your sausages.
Rinse and soak hog casings in warm water for 30 minutes if using. Load them onto your sausage stuffer (keeping the stuffer and the casings wet makes loading easier), then gently stuff the meat mixture into the casings. Do not tie off the end of the casing right away; the air needs to come out first. Don’t overstuff—leave some slack to avoid bursting. To prevent sausage casings from bursting from trapped air, prick your sausage every 2-3 inches with a clean toothpick or needle.Pinch off two sausage links with both hands. Spin the first link away from you a few times. For the next link, spin it toward you, alternating directions as you work down the coil. Tie off the end. For the best flavor, wrap the sausages and let them sit in the fridge for 2-12 hours. This lets the spices meld with the meat.
Heat a skillet over medium heat with some butter. Cook sausages for 8-10 minutes, turning occasionally, until golden brown and the internal temperature hits 160°F. Preheat your grill to medium. Cook for 8-10 minutes, turning often.Store your sausages in the fridge for up to one week or freeze them in an airtight container for up to three months.