Verify the measurements first
Check that the probe sits in a suitable central part of the meat rather than a fat pocket, bone or cavity. Confirm that chamber temperature near the food remains in the planned range. An exhausted fuel supply or displaced sensor can resemble a naturally slow temperature rise on the display, so those simpler explanations need attention before changing the cooking strategy.
Compare unusual readings with a clean appropriate instant-read thermometer. Open the lid deliberately for the check, then close it again. Constantly inspecting the food changes the conditions and makes a stable trend harder to interpret. Record readings and small adjustments at useful intervals instead of drawing a conclusion from several numbers observed within a few moments of one another.
Evaporation can slow warming
Water evaporating from the surface uses energy. On a large cut, that cooling can offset some incoming heat and slow the rise in the center for a period. Surface area, airflow, chamber humidity and the shape of the cut all affect the pattern. There is no reason every pork shoulder must stall at the same temperature or for the same duration.
A stall is neither a reliable timer nor proof of tenderness. Connective-tissue softening and safe cooking conditions cannot be established from a particular flat section of a temperature graph alone. Meat may still be firm after a long slow phase. A smaller cut can also cook successfully without displaying an obvious plateau, so the absence of a dramatic stall is not necessarily a problem to correct.
Respond deliberately rather than overheating
If fuel, measurement and chamber heat are correct, continuing the controlled cook may be appropriate. Optional wrapping after a crust has formed reduces evaporation and can change the remaining process, but it also softens the exterior. A moderate adjustment within the chosen method is very different from suddenly placing maximum direct heat beneath the meat in an attempt to force the number upward.
Include possible delays in the serving plan. Prepared side dishes are more helpful when guests arrive than a risky rush to finish the main course. Verify the safe internal temperature separately from the stall, then assess the texture required for the dish. For the next cook, record actual cut thickness, measured chamber heat and observed duration. Those details are more useful than a general claim that every brisket should finish at exactly the same point in a fixed schedule.
Use grilling equipment only in its intended location and follow the manufacturer’s instructions. Timing is not a substitute for checking doneness.
