Sous Vide Bratwurst

Ingredients

• 3 pounds boneless pork shoulder, diced
• 1 pound boneless lean veal shoulder, diced
• 1 pound pork back fat, diced
• 1 cup soy protein concentrate (optional)
• 3 tablespoons kosher salt
• 2 teaspoons ground white pepper
• 1 1/2 teaspoons ground ginger
• 1 1/2 teaspoons freshly grated nutmeg
• 2 large cold eggs, lightly beaten
• 1 cup ice-cold heavy cream
• 10 feet hog casings, soaked in tepid water for at least 30 minutes and rinsed