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Step-by-step instructions.
Trim and season
Trim hard fat and thin edges, leaving about ¼ inch of fat cap. Mix salt, pepper, and garlic powder; season evenly. If seasoning ahead, refrigerate uncovered.
Set up steady heat
Preheat the smoker to 250°F. Place the brisket fat-side toward the heat source. Insert a probe into the thickest part of the flat, avoiding fat pockets.
Build the bark
Smoke until the surface is dark and the rub does not wipe away easily, often around 165–175°F internal. This may take 5–8 hours. The stall is normal; avoid repeatedly opening the lid.
Wrap and finish
Wrap snugly in unwaxed butcher paper. Continue at 250°F until a probe slides into several spots in the flat with very little resistance, often around 200–205°F. Temperature is a checkpoint; tenderness decides the finish.
Rest, then slice
Rest wrapped for at least 2 hours with temperature monitored; maintain 140°F or above during an extended hot hold. Slice the flat across its grain, then rotate the point as its grain changes. Slice only what you plan to serve. A sharp kitchen knife is enough; use smooth strokes rather than pressing down hard.
Whole beef cuts have a USDA minimum of 145°F with a 3-minute rest. Brisket is cooked much further for tenderness.
USDA temperature guidance

