Gather and prepare all your ingredients. Weigh the different types of meats and fat, then cut everything into roughly 1-inch cubes. If your meat isn’t already partially frozen, spread the cubes on a tray and place them in the freezer until firm but not completely solid (about 1 hour). Place all your clean bowls and grinder parts in the fridge or freezer to chill as well.
While you wait, weigh and prepare your seasonings. If using fresh garlic, mince it finely.
Assemble your meat grinder with the chilled parts, following the manufacturer’s instructions. Use a coarse or medium die for grinding.
Remove the meat and fat from the freezer and combine them in a large, cold bowl. Mix with clean hands to evenly distribute fat and organ meats.
Grind all the meat, collecting it in a large, cold bowl or tray.
Add the seasonings and mix quickly with clean hands to distribute everything evenly. Return the mixture to the fridge or freezer while you wash and sanitize your equipment and surfaces. Place your sausage stuffer parts in the freezer to chill.
Once everything is ready, mix the sausage mixture again until it becomes homogeneous and slightly sticky. You can mix by hand or use a stand mixer with a paddle or dough hook attachment.
If you want to make stuffed sausages continue with the next section. If making patties, simply form the mixture into patties with clean, slightly damp hands and place them on a parchment-lined tray. Keep them refrigerated, cook immediately, or freeze (see notes).