To a pan add one pound of ground pork and 1/4 cup diced onion.
When the pork is no longer pink and the onion is translucent add your seasoning mix (black pepper, fennel, thyme, sage, and salt). Cook until brown.
Remove any excess oil from the pan and add 1 cup of chicken stock. Bring to a boil.
Add two cups of heavy cream and bring to a boil. Taste and adjust seasoning to your taste.
Add sage and two teaspoons of Xanthan gum. Stir and bring to a boil.
Stir and check if the gravy is thick enough for you if not add more Xanthan gum 1/2 teaspoon at a time. If it's too thick add more cream or chicken stock.