How Long to Smoke Pastrami: The Corned Beef Head Start Most Recipes Skip
Recipes for smoked pastrami run from four hours to eighteen, and the smoker isn't where most of that gap comes from. It starts with whether the brisket arrives already cured, and it doesn't always end when the smoke stops either.
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, asked the same question about its own process, answers with a number that makes all three look small: three weeks of brine, three days of smoke, then 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.
Most home recipes measured for this piece 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. Katz’s three-week brine describes the other path: curing a raw brisket from scratch. 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. Reddit’s most detailed account smokes for about 6 hours, then wraps in foil and keeps going until the probe reads 205°F, closer to the full route. Neither is wrong. They stopped describing the cook at different points in it.
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 three hours after three days of smoke. A Bradley Smoker recipe puts “steaming” directly in its title, moving the meat to a steamer basket once it’s smoked through. 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
| Stage | What it does | Time |
|---|---|---|
| Curing (if starting raw) | Brine and curing salt turn a raw brisket into corned beef | 7-21 days, before the smoker |
| Unwrapped smoke | Bark and smoke ring form, internal climbs to bark-set | 3-6 hours to 150-165°F |
| Wrapped smoke | Collagen finishes converting to a sliceable texture | 2-4 hours to 200-205°F |
| Optional steam | Softens the crust and interior further, common in deli-style recipes | 1-3 hours |
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, which is what most home recipes measured for this piece do, 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.
nnThe 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.
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