Clean your meat of any silver skin, sinew, arteries and cut into small strips or cubes. Place in the freezer for an hour or until the temp reaches 32f – 34F. (0c-1c)
cook your onions and place into small bowls. The weight of the onions in the recipe reflects "cooked weight" not raw weight.
Grind your very chilled meat/fat along with the sauteed and caramelized onions on a medium plate (6mm). Rechill your meat after grinding. You want the temp to be below 34f (1c)
Mix the chilled meat, spices, and any liquids till it becomes very tacky. If you grab a small handful, it will stick to your hand if you hold your hand upside down.
Stuff your sausage into it's casing. (I like to refrigerate my sausage overnight but with a fresh sausage it's not necessary.)
Cook your sausage to an internal of 155f (68c)