How Long to Smoke Pastrami: The Corned Beef Head Start Most Recipes Skip

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Extraordinary BBQ times pastrami at “at least 4 hours.” Smoking Meat’s version runs 12 to 18 hours. Google’s AI Overview lands in between at 8 to 14 hours, then asks a question none of the shorter recipes bother with: are you starting from a raw brisket or from corned beef someone else already cured? Katz’s Deli, describing its own process, answers with a number that makes all three look small: three weeks of cure, a slow smoke, then two to three hours of boiling before a single sandwich gets made.

None of these sources are lying to each other. They’re answering different questions with the same unit of hours attached, and the smoker is only responsible for one part of the answer.

It starts as a corned beef, cured or not yet

Pastrami and corned beef are close to the same project with two different endings. Both start as a raw brisket cut, usually the flat, held in a salt and curing-salt brine for a week or more before it’s food-safe to eat cold. Corned beef stops there and gets boiled or steamed. Pastrami gets rinsed, coated in a pepper-and-coriander rub, and smoked instead.

Plenty of home recipes skip the brining step entirely by buying a corned beef point or flat already cured at the grocery store, usually around a holiday when it’s easy to find; Smoking Meat publishes a shortcut version built exactly that way, 8 to 10 hours at 240°F. Most of the recipes quoted above take the other path: curing raw beef from scratch. Extraordinary BBQ brines its brisket for at least two weeks, and Katz’s cures for three, on the navel rather than the brisket. Neither path changes what happens on the smoker. It only changes how many days, or weeks, pass before the smoker gets involved at all.

The smoker time follows the same clock as corned beef

This site already measured why corned beef takes anywhere from 5 to 9 hours: curing salt fixes color and flavor, not collagen, so a cured brisket still has to break down the same connective tissue a raw one would. Pastrami carries the same collagen, plus a spice crust instead of a plain cure. The recipes that report 4 to 6 hours for pastrami and the ones that report 8 to 14 are very likely describing the same two checkpoints already documented on the corned beef piece: a bark-set waypoint around 150°F to 165°F, and a probe-tender finish at 200°F to 205°F that some recipes never mention reaching.

Extraordinary BBQ’s “at least 4 hours, or until internal temp hits about 160” reads exactly like a bark-set number, not a finished one, and the recipe confirms it: the brisket then goes into a covered pan with liquid until it reaches about 200°F. Reddit’s most detailed account smokes for about 6 hours, then wraps in foil and keeps going until the probe reads 205°F, the same full route. Neither is wrong. A headline number can simply stop describing the cook earlier than the instructions do.

The step that isn’t smoking at all

A detail the smoker-time numbers don’t capture: several recipes finish pastrami with steam instead of stopping at the smoker. Katz’s boils theirs for two to three hours after the smoke. A Bradley Smoker recipe puts “steaming” directly in its title: four hours of smoke to 150°F, a day or two in the fridge, then a steam in a 275-300°F oven until the center reads 160°F. The point of the extra step is texture, softening a crust and interior that spent hours in dry heat, and it commonly adds another 1 to 3 hours that almost never shows up in a recipe’s headline “total time,” even when that same recipe’s instructions clearly call for it.

Time by stage

Why the safety floor still isn’t the number to watch

Beef clears food-safety territory at 145°F, well before a pastrami is anywhere close to sliceable. The same logic already applied to the whole brisket piece on this site holds here: almost the entire window past that floor, all the way to 200°F or above, is collagen breaking down into something a knife can get through cleanly, not a safety margin. Pulling a pastrami at 165°F because it’s technically safe produces a fully cooked, barely tenderized piece of meat.

What this means for the timeline

Starting from a corned beef already cured at the store, the shortcut many home recipes take, plan on roughly the same 6 to 9 hours this site already found for corned beef, plus another 1 to 3 hours if the recipe finishes with a steam step rather than stopping at the smoker. Starting from a raw brisket and curing it from scratch, Katz’s style, means adding a week to three weeks of brine before any of that smoker math even starts. Neither path is the “real” pastrami. They’re just measuring the project from different starting lines.

What I haven’t measured

This site hasn’t smoked a pastrami yet, so the stages above come from recipes and forum accounts that did, not from a chamber logged here, the same caveat attached to the corned beef piece this one leans on. One question stayed open while researching this piece: whether a store-bought corned beef, already brined for a week or more before it’s sold, reaches bark-set any faster than a brisket seasoned only hours before it hits the smoker. No source measured for this article compares the two directly. See how this site tests and labels its content for what “measured” versus researched means here.

The same bark-set and probe-tender split shows up outside of beef, too. Pork steak hits a similar fork in the road between a sliceable pull and a fully probe-tender one.

Every other cut on the site sits in one table, pit temp to pull temp, in the smoking times and temperatures chart.