Get all the grinding equipment into the freezer while you prepare.
Lightly toast the fennel seeds for a minute to release a little natural oil
Mix 3/4 of the pork with all the dry ingredients in a large bowl and knead the mix until very sticky
Mix in the last quarter of the meat and work it in a little more gently
Load the stuffer and extrude into hog or beef casings that have been soaked for a few hours, or ideally over night
Hang in the fridge for 4-5 days to let the cure work and firm up the sausage