Sirloin tip roast (smoked, medium-rare)

round roast · verified system recipe · Lean-roast technique — hand-curated

Pull at
128°F
Total time
~2.2 hr

Phase timeline

75m
30m
10m
15m
Climb (bare)Stall (very brief)PullResttotal: 2h 10m

Step-by-step

  1. 1. Climb (bare)

    → 105°F · ~75 min

    225°F pit, oak + a single chunk of cherry for color. Sirloin tip is leaner than tri-tip and slightly more tender than eye of round — it sits in the awkward middle of lean-roast cuts. Bare climb only. If you see white smoke, the wood is smoldering — add air, do not add more wood. The clean-smoke window is the first 60 minutes; that is when the surface accepts smoke.

  2. 2. Stall (very brief)

    → 120°F · ~30 min

    Stall typically lasts 15-20 min in the 120-125°F band. (a) Hold the pit steady. (b) Why: this is surface evaporation, not collagen — sirloin tip has slightly more silver-skin than eye of round but still not enough for a meaningful stall. (c) When to deviate: if you have trimmed silver skin aggressively, the stall may not appear at all — climb straight through. That is fine, just watch the probe closely as it approaches 125°F.

  3. 3. Pull

    → 128°F · ~10 min

    Pull at 128°F for med-rare (132-133°F after carryover on a 3-4lb roast). (a) Pull on the early side. (b) Why: sirloin tip has fewer fat lines than tri-tip — carryover is uniform and predictable, but the texture window is narrow. Above 135°F internal, the bottom round muscle fibers tighten and the slice goes from buttery to chewy. (c) When to deviate: for medium (140°F final), pull at 133°F. Do not aim for medium-well — wrong cut, switch to chuck.

  4. 4. Rest

    ~15 min

    Counter, foil tent, 12-15 min. (a) Tent loose. (b) Why: same as eye of round — there is no collagen working in the background, so extending the rest does not buy you tenderness, only heat loss. (c) Deviate: holding for guests? Cooler + towels at 140°F for 60-90 min max. Past 90 min you will see meaningful carryover into med territory.

Rub
Kosher salt + black pepper + garlic granules + onion powder, 3:2:1:1. (a) What: dry-brine the salt-only the night before (uncovered in the fridge), then add pepper/garlic/onion 1 hr before the pit. (b) Why: salt needs 12+ hours to penetrate past the first 1/4 inch of lean beef; pepper/garlic burn black if applied the night before. Splitting the application is the technique. (c) When to deviate: if you did not dry-brine the night before, hit it with the full rub 45 min ahead, NOT 5 min ahead — at least give salt enough time to dissolve and start drawing moisture back in (reverse osmosis). 5-min-before rubs sit on the surface and slough off in the first hour.
Spritz / mop
Do not spritz, with one exception. (a) What: leave bare for the first 60 min, then a SINGLE light apple-juice spritz around the 75-min mark if the surface looks chalky. (b) Why: the one-time spritz is to reset surface humidity for smoke adhesion — it is not a recurring schedule. Repeated spritzing on a lean cut just washes rub off and stretches the cook. (c) When to deviate: if your pit holds humidity well (water pan, sealed pellet smoker) skip the spritz entirely. The spritz is for dry, drafty offset cookers.
Wrap method
Do not wrap. (a) What: bare for the full cook. (b) Why: same logic as eye of round — no collagen to convert, wrap just steams the bark off. Sirloin tip has slightly more fat than eye of round but still not enough to justify wrapping. (c) Failure mode if you wrap: the roast accelerates through the doneness window 2x faster, and you will lose the smoke ring you spent 90 minutes building. If you wrap to hold heat for serving, do it AFTER pulling, not during cook.
Rest method
Counter, foil tent, 12-15 minutes. (a) Loose tent only, on the board. (b) Why: like all lean rounds, the rest is for juice redistribution, not for connective-tissue softening. 12-15 min is the productive window; beyond that the roast cools toward 130°F surface temp and you have lost the eating temperature. (c) Deviate: for delayed serving, foil + towels in a dry cooler — but pull at 125°F instead of 128°F to account for carryover during the hold.
Minimum rest
15 min

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