From "Charcuterie", billed as "Classic Bratwurst":
1350 grams boneless pork shoulder butt, diced
450 grams boneless lean veal shoulder, diced
450 grams pork fat back
40 grams kosher salt
140 grams soy protein concentrate (optional)
6 grams ground white pepper
5 grams ground ginger
5 grams freshly grated nutmeg
2 large cold eggs, lightly beaten
250 millilitres ice cold heavy cream
3 meters hog casings, soaked in tepid water for at least 30 minutes and rinsed
Combine all ingrdients except eggs and cream and toss well to distribute the seasonings. Chill until ready to grind.
grind the mixture through the small die into a bowl set into ice.
Using the paddle attachment of a standing mixer, (or strong wooden spoon if by hand), mix on low speed for minute. Add the eggs and cream, and mix until the eggs and cream are uniformly incorporated, and the sausage appears sticky, about a minute longer. Saute a small portion of the sausage and taste; adjust the seasoning if necessary. (Refrigerate the sausage mixture while you do this).
Stuff the sasage into the hog casings. Twist into 6 inch/15 centimeter links. refrigerate or freeze until ready to cook.
Bently saute or roast the sausage to an internal temperature of 150 degrees F/65 degrees C.
Yields about 5 pounds/2.25 Kilos; about twenty 6 inch/15 centimeter links.