Sous Vide: Barbecue Beef Brisket Sandwich, Deli Style

About
Difficult to create without sous vide tenderization, this recipe utilizes sous vide brisket sliced thin and then grilled.
Ingredients
Beef brisket, 2.2 lb/1 Kg.
Kosher salt, 1 Tablespoon.
Vegetable oil, 2 tablespoons.
Baguette, about 9"/25 cm.
Butter, softened, about 1 oz/30 g.
Crispy Onions
Onions, 1 each.
Flour, 1 cup/125 g.
Corn starch, 1 cup/125 g.
Baking soda, 1 teaspoon.
Kosher salt, a tiny pinch.
Dark side BBQ sauce, 1 cup/225 ml.
Equipment requirements
Immersion circulator, portable or stationary.
Heat rated container, minimum of 2 gallons/8 liters.
Lipavi L10 rack or larger.
Heat rated sous vide bags.
Kitchen tongs, metal.
Probe thermometer.
Thick bottomed skillet, 12"/325 mm or larger.
Cast iron grill pan (or just a cast iron pan) for searing.
Infrared thermometer.
Sauce pot, 3 qt/3 liter.
Colander, medium sized.
Paper towels.
Mechanical slicer or sharp slicer knife.
Serrated bread knife.
Instructions
Serves 2 Level of difficulty 2.25

Procedure:
Preheat the sous vide bath to 165 F/74 C Season the brisket with the kosher salt. Heat the thick bottomed skillet to 250 F/121 C, add the oil and the brisket to the pan at the same time. Brown well on all sides--if the roast has an "edge" you can stand it up against the side of the pan to achieve uniform color all around. This process should take no more than half an hour. Turn off the burner and let the roast sit in the pan while it cools enough to be easily handled. Seal the brisket in a vacuum bag and process at 165 F/74 C for 24 hours. After the interval has elapsed, shock the package in iced water until it achieves 70 F/21 C--about 15 minutes. Refrigerate to 40 F/4 C before proceeding. Make the Dark Side Sauce if you haven't already. Dip the sealed brisket in hot tap water (or a sous vide bath) for a couple of minutes to dissolve the gel. Cut the corner of the bag and collect the juices in the bag. Most enthusiasts discard the juices but they are full of flavor. Learn how to clarify them HERE. Turn the oven on to the lowest possible setting--somewhere between 170 F/77 C and 225 F/107 C. Remove the brisket from the bag and pat dry with paper towels. Remove external fat, but keep in mind that when you sear the thin sliced beef most of the fat will render out on its own. Slice the beef against the grain as thin as absolutely possible. Set aside. Heat the cast iron grill pan to 250 F/121 C, dip a paper towel in vegetable oil and use it to polish the grates. This will remove any oxides and lubricate. You can also spray with that PAM stuff, we call it "spray release" these days. It is perfectly safe and very efficient. It also has a little bit of lecithin in it, which is a natural product that binds water and prevents sticking. Use the serrated knife to split the baguettes lengthwise. Spread evenly with the softened butter. Some people substitute mayonnaise for this step. Mayonnaise is predominantly oil with a tiny bit of egg and vinegar. It works for this, but I find that it makes the bread a little soggy because of the moisture.







