Sous Vide Smoked Brisket

Name: Sous Vide Smoked Brisket
Prep time: 15 min
Cook time: 27 h 30 min
Total time: 27 h 45 min
Cuisine: American
Ingredients: 2 ounces coarsely ground black peppercorns (about 1/3 cup; 55g); see note; 2 1/4 ounces kosher salt (about 1/4 cup; 65g); 1/4 ounce (10g) pink salt, such as Prague Powder Curing Salt (optional; see note); 1 flat-cut or point-cut brisket, about 5 pounds (2.25kg); see note; 1/4 teaspoon liquid smoke, such as Wright's Liquid Smoke (optional; see note); Dill pickles, sliced yellow onion, and white bread, for serving