I got a call about six years back from a guy running an MLR-850 who couldn't figure out why his pulled pork was coming out like leather while his briskets were perfect. Same smoker, same wood, roughly the same cook temps. He was convinced something was wrong with the unit.
Wasn't the unit. It was his water pan.
He'd stopped refilling it because he read somewhere that "real" pitmasters don't use water pans. And for his briskets — which he was wrapping at the stall anyway — it didn't matter much. But those pork butts were spending 14 hours in what had become a convection oven with smoke flavor. No surface moisture to speak of. The bark was forming too fast, sealing the exterior before the collagen had time to break down properly.
This is the kind of thing that separates operators who understand their equipment from operators who just turn it on and hope.
What We Actually Mean by Dry vs. Moist Heat
The terms get thrown around loosely, so let me be specific. Dry heat smoking means your cook chamber has low relative humidity — typically below 25% — and the primary heat transfer is happening through hot air convection and radiant energy from your heat source. Moist heat smoking means you've got significant water vapor in that chamber, usually above 50% relative humidity, and that moisture is participating in the heat transfer.
Neither one is "correct." They're tools. And different cuts respond to them differently because of how moisture affects three things: surface evaporation, bark formation, and collagen conversion.
In a dry environment, moisture evaporates quickly from the meat surface. This creates that evaporative cooling effect we call the stall — the meat's internal temp plateaus because surface evaporation is pulling heat away as fast as you're adding it. The surface dries out, proteins and sugars concentrate and undergo Maillard reactions, and you get bark.
In a moist environment, evaporation slows down dramatically. The air is already saturated (or close to it), so there's nowhere for that surface moisture to go. The stall is shorter or barely noticeable. Bark formation is slower and softer. But here's the trade-off: moist heat transfers energy more efficiently than dry heat at the same temperature. Water vapor conducts heat better than air. So your cook times can actually be shorter, even though you're not drying the surface as aggressively.
Brisket: The Case for Controlled Dryness
Most commercial brisket operations I've worked with over the years run drier than you might expect — somewhere around 20-30% relative humidity for the first phase of the cook. And there's good reason for it.
Brisket needs bark. Not just for appearance, but because that concentrated, caramelized exterior is carrying a huge percentage of your flavor profile. You need that surface to dry enough for Maillard reactions to really get going, which means you need evaporation happening.
But here's where it gets interesting. A lot of operators — especially high-volume guys running SP-1000s or SPK-1400s — will start dry and then wrap. The wrap (butcher paper, foil, whatever your preference) creates a localized moist environment around the meat even while the chamber itself stays dry. You get your bark formation in the first 4-5 hours, then you protect it and accelerate the collagen breakdown with trapped moisture.
I've seen operators try to replicate this by just running high humidity the whole cook. It doesn't work the same. You end up with a soft, almost rubbery exterior that never develops that crust. The brisket tastes fine, but it doesn't look right and the texture's off. Customers notice even if they can't articulate why.
One thing I'll give the competition guys credit for — they figured this out years ago. Most of them run their first few hours bone dry, sometimes even cracking the door periodically to dump humidity. Then they wrap and let the meat braise in its own juices. It's a two-phase approach that uses both environments strategically.
Pork Shoulder: More Forgiving, But Not Infinitely
Pork butts have more intramuscular fat and more collagen than brisket, which makes them more forgiving of humidity variations. But "more forgiving" doesn't mean "immune."
The guy I mentioned earlier with the leather pork — his problem was that a pork butt sitting in a dry chamber for 14 hours without any surface moisture protection will form an exterior that's essentially a shell. The collagen inside is converting just fine, but that outer half-inch becomes tough and dry. When you pull it, you get a mix of silky interior and chewy exterior. Not ideal.
For pork shoulder, I generally recommend maintaining at least 40% humidity throughout the cook. A water pan in your SP-700 or even a spray bottle every couple hours if you're running a smaller unit like the SC-300. You still get smoke penetration, you still get color development, but you're not desiccating the surface.
The rotisserie systems on Southern Pride units actually help here more than people realize. Constant rotation means no single surface is facing the heat source long enough to over-dry. I've seen guys run pork butts on an MLR-850 at pretty low humidity and still get good results just because the rotation keeps redistributing surface moisture. Try that in a static cabinet smoker without rotation and you'll have hot spots that turn into dry spots.
Ribs: Where Moisture Management Gets Personal
Ribs are where I see the most variation in operator preference, and honestly, I think that's fine. The cut is thin enough that you can get away with different approaches.
Dry environment ribs: harder bark, more pronounced smoke ring, slightly chewier exterior. Some competition teams swear by this. They want that snap when you bite through the surface.
Moist environment ribs: tender throughout, softer bark, often a bit more succulent but less textural contrast. Restaurant operators who need to hold ribs for service often prefer this because they don't dry out as fast in a holding cabinet.
I personally lean toward starting dry and spritzing periodically — maybe every 45 minutes after the first two hours. Apple cider vinegar, apple juice, whatever. It's not about the flavor so much as maintaining surface moisture without flooding the chamber with humidity. But I know guys who run their ribs with a full water pan the entire time and turn out excellent product. Ribs are thin enough that either approach can work if you're paying attention.
Poultry: The Exception That Proves the Rule
I should mention chicken and turkey because they behave completely differently than red meat, and I've seen operators get confused by this.
Poultry skin needs to dry out or it turns rubbery and unappetizing. But poultry breast meat dries out quickly because there's minimal collagen to convert into gelatin. So you've got competing needs: dry surface for crispy skin, moist environment to protect the breast meat.
The solution most commercial operators land on is higher heat and shorter cook times. Run your chamber around 275-300°F, keep humidity low, and get the bird done before the breast overcooks. The higher temp renders the skin fat and crisps it before the meat has time to dry out.
Some guys will smoke at 225-250°F for the first hour to get smoke penetration, then crank it up to finish. That works too. What doesn't work is trying to smoke poultry low and slow in a moist environment — you'll get rubbery skin every time.
Controlling Humidity in Your Smoker
Southern Pride units give you a few ways to manage chamber humidity, and which one matters depends on your model.
Water pans are the obvious one. More water equals more humidity. Position matters too — closer to your heat source means faster evaporation. I usually tell people to start with a full pan and see how their product responds, then adjust from there.
Damper position affects humidity more than people think. A wide-open damper exhausts moist air faster, effectively drying out your chamber. Close it down and you're trapping moisture. On the gas rotisserie units — your SPK-500 through your SP-2000 — damper adjustment is your primary humidity control after the water pan.
Meat load matters too. Twenty briskets release more moisture than five. If you're running a full load on an SPK-1400, you might not need a water pan at all for the first few hours because the meat itself is humidifying the chamber. Light loads need supplemental moisture or your chamber runs drier than you expect.
And this is where having a well-built smoker actually matters. Cheaper units with poor door seals leak moisture constantly — you're fighting to maintain any humidity at all. The seal quality on Southern Pride cabinets is something I never really appreciated until I spent a few years servicing import brands that couldn't hold humidity above 30% no matter what operators tried. If you're adding water and your chamber won't come up, check your door gaskets. We stock replacements at Southern Pride of Texas and they're worth replacing before you waste a lot of water and frustration.
The real skill here isn't following a formula. It's understanding what's happening in your chamber and adjusting based on what your product needs. Different cuts, different approaches. Same smoker, different results — on purpose.
Resources: Southern Pride of Texas | Southern Pride | National Barbecue & Grilling Association
#BBQ #CommercialBBQ #SmokeMaster #BBQRestaurant #SouthernPrideOfTexas #SouthernPrideSmokers #BBQLife
Photo by Collab Media on Pexels.
About the Author: Ray is a retired authorized Southern Pride service technician with 22 years of field experience on commercial BBQ equipment across the Gulf Coast and Southeast.