Smoked pastrami from store-bought corned beef turns a $10 grocery store corned beef into deli-quality pastrami with a peppery bark, smoky flavor, and melt-in-your-mouth tenderness. You soak the corned beef for 1 hour to pull excess salt, coat with mustard, apply a homemade pastrami rub heavy on black pepper and coriander, then smoke at 275°F until the bark sets at 170°F. Transfer to a foil pan with a raised rack and beef broth, cover, and braise at 375°F until 203°F and probe-tender. Slice thin and stack on toasted brioche buns with Swiss cheese, sauerkraut, and Thousand Island dressing. Total cook time runs about 5 to 6 hours.

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Why Store-Bought Corned Beef Is the Shortcut to Smoked Pastrami

Corned Beef Is Already Brined

Making pastrami from scratch requires 5 to 10 days of brining a raw brisket in a salt-and-nitrite cure. Store-bought corned beef skips that entire process. The meat arrives already brined, cured, and ready for the next step. All you need to do is desalinate, season, and smoke. This turns a multi-day project into a same-day cook for smoked pastrami.

What Makes Pastrami Different From Corned Beef

Both corned beef and pastrami start with a brined brisket. The difference is in what happens after the brine. Corned beef gets boiled or braised. Pastrami gets a peppery spice rub and goes into a smoker. The smoke and the rub are what transform corned beef into pastrami. Additionally, pastrami is traditionally finished by steaming, which this recipe accomplishes with the braise step.

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Desalinating and Prepping the Corned Beef for Smoked Pastrami

Why You Soak the Corned Beef

Store-bought corned beef is extremely salty from the curing process. Soaking it in cold water for at least 1 hour draws out excess sodium. Without this step, your finished smoked pastrami will be too salty to enjoy. Some recipes recommend soaking for 12 to 24 hours for an even milder salt level. For this recipe, 1 hour produces a balanced result.

Rinsing and Drying

After the soak, rinse the corned beef under cold running water to remove any remaining surface brine. Pat it completely dry with paper towels. A dry surface is critical because the mustard binder and pastrami rub need something to grip. Wet meat causes the rub to slide off and prevents proper bark formation during smoking.

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Building the Smoked Pastrami Rub

The Classic Pepper-Coriander Base

Authentic pastrami rub is built on two ingredients: coarse black pepper and ground coriander. These two spices define the flavor profile and create the signature dark, peppery bark. This recipe adds brown sugar for a slight sweetness and caramelization, garlic and onion powder for depth, smoked paprika for color, and mustard powder for a tangy bite.

Applying the Rub Over Mustard

Coat the dried corned beef with a thin layer of yellow mustard. The mustard acts as a binder that helps the rub stick to the surface. It doesn’t add mustard flavor to the finished smoked pastrami. The vinegar in the mustard cooks off during smoking. Apply the rub generously on all sides, pressing it into the meat to ensure maximum coverage.

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Smoking the Corned Beef to Build the Bark

Temperature and Bark Development

Preheat your smoker to 275°F. Place the rubbed corned beef directly on the grates. Smoke until the bark is set, deep, and crusty, and the internal temperature reaches approximately 170°F. This phase typically takes 2 to 3 hours depending on the size of your corned beef. The bark is where the concentrated peppery, smoky flavor lives on this smoked pastrami.

Wood Selection

Any mild-to-medium hardwood works for smoked pastrami. Cherry, apple, pecan, and oak all complement the peppery rub without overwhelming the meat. Avoid mesquite because it adds a bitterness that clashes with the cured beef flavor. The smoke should enhance the pastrami, not dominate it.

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The Braise: Raised Rack and Beef Broth for Tender Smoked Pastrami

The Raised Rack Technique

This is the detail that separates good smoked pastrami from great. Place the smoked corned beef on a wire rack inside a foil pan. Pour beef broth into the bottom of the pan underneath the rack, not directly on the meat. The rack keeps the pastrami elevated above the liquid. The broth creates steam during the covered braise that tenderizes the meat without washing off the bark. This technique preserves the crusty exterior while making the interior melt-in-your-mouth tender.

Braising at 375°F to 203°F

Cover the pan tightly with foil. Return to the smoker or transfer to an oven at 375°F. Cook until the internal temperature reaches 203°F and a probe slides in with zero resistance. The higher braising temperature speeds up the collagen breakdown in the brisket. At 203°F, the connective tissue has fully converted to gelatin, producing that signature tender, sliceable texture.

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Slicing and Building the Smoked Pastrami Sandwich

Rest Before Slicing

Let the pastrami rest for 20 to 30 minutes after removing from the smoker. This rest allows the juices to redistribute and the meat to firm up slightly for cleaner slicing. For the thinnest deli-style slices, use a meat slicer. A sharp carving knife works if you don’t have a slicer, but aim for slices as thin as possible.

The Sandwich Build

Toast brioche buns until golden. Layer sliced smoked pastrami generously on the bottom bun. Add a slice of Swiss cheese and melt it under the broiler or with the lid closed on a hot grill. Top with sauerkraut and a generous drizzle of Thousand Island dressing. Close the bun and serve immediately. The combination of smoky, peppery pastrami with tangy sauerkraut and creamy Thousand Island on a buttery brioche bun is the perfect balance of flavors and textures.

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Step-by-Step: How to Make Smoked Pastrami from Corned Beef

Step 1: Soak and Dry the Corned Beef

Rinse the corned beef under cold water. Soak in cold water for 1 hour to pull excess salt. Remove and pat completely dry.

Step 2: Season with Mustard and Pastrami Rub

Coat the corned beef with a thin layer of yellow mustard. Mix the pastrami rub (black pepper, coriander, brown sugar, garlic powder, onion powder, smoked paprika, mustard powder). Apply generously on all sides.

Step 3: Smoke at 275°F

Place on the smoker at 275°F. Smoke until the bark is set, deep, and crusty, and internal temp reaches approximately 170°F, about 2 to 3 hours.

Step 4: Braise With Beef Broth

Place on a wire rack inside a foil pan. Pour beef broth underneath (not on the meat). Cover tightly with foil. Return to smoker or oven at 375°F. Cook until 203°F internal and probe-tender.

Step 5: Rest and Slice

Rest 20 to 30 minutes. Slice thin against the grain, as thin as possible for deli-style pastrami.

Step 6: Build the Sandwich

Toast brioche buns. Layer sliced pastrami, add Swiss cheese and melt. Top with sauerkraut and Thousand Island dressing.