Pork Shoulder Roast Time: The Real Reason “Forever” Still Isn’t Enough

Pork shoulder can cook for a very long time and still feel firm or chewy if it hasn’t reached the conditions needed for connective tissue to break down.

Key idea:

• Pork shoulder becomes tender when collagen melts into gelatin, which happens only after the meat spends enough time at the right internal temperature range.

How Long Pork Shoulder Should Roast
Roast time depends primarily on oven temperature, weight, and whether it’s bone-in or boneless.

Common roasting guidelines:

• Low-and-slow (250°F / 120°C): about 90–120 minutes per pound (2–2.5 hours per kg)
• Moderate (300°F / 150°C): about 60–90 minutes per pound (1.3–2 hours per kg)
• At 325°F / 165°C: about 50–70 minutes per pound (1.1–1.5 hours per kg)

Example:

• A 6 lb (2.7 kg) pork shoulder at 250°F often needs 9–12 hours, which means 11 hours can be normal—but only if the internal temperature is actually progressing correctly.

The Most Important Number: Internal Temperature
Time is only a rough guide. Tenderness tracks internal temperature more reliably.

Targets:

• For sliceable pork shoulder: 180–190°F (82–88°C)
• For fall-apart pulled pork: 195–205°F (90–96°C)

What to know:

• If it’s still tough at 185–195°F, it usually just needs more time.
• If it never gets past a certain point, the roast may be stuck in a stall.

The “Stall” That Makes 11 Hours Feel Endless
During slow roasting, pork shoulder can plateau around:

• 150–170°F (65–77°C) internal temp

Why it happens:

• Moisture evaporating from the surface cools the meat, slowing the temperature rise.

Signs you’re in the stall:

• The thermometer barely moves for hours
• The meat looks cooked outside but isn’t tender yet

Common Reasons Pork Shoulder Stays Tough

• Oven temperature is lower than the dial says (many ovens run off by 25–50°F / 15–30°C)
• The roast is not covered, so surface drying slows heat penetration
• The meat is being judged too early (before it reaches 195–205°F)
• Opening the oven frequently drops heat and extends cooking time
• The cut is unusually large/thick, or partially still cold when cooking began

How to Fix It (Without Starting Over)
Practical steps:

1. Check internal temperature with a probe thermometer
   • If it’s below 195°F, keep cooking.
2. Cover tightly (foil or a lid)
   • This reduces evaporation and helps push through the stall.
3. Optional but effective: add a small amount of liquid to the pan
   • Example: ½–1 cup broth, water, cider, or a mix.
4. If you’re pressed for time, raise oven temp to 300–325°F (150–165°C)
   • This can help finish without drying out, especially if covered.
5. Confirm doneness by feel:
   • A probe should slide in with almost no resistance, like room-temperature butter.

Quick Reference: What to Tell Your Sister

• 11 hours isn’t automatically too long for pork shoulder.
• What matters most is whether the meat reached 195–205°F internal and stayed there long enough for collagen to melt.
• If it’s tough, it usually needs more time, not less—especially if it got stuck in the stall.

Bottom Line
A pork shoulder roast can take anywhere from 6 to 12+ hours, depending on size and temperature. If it’s not tender after 11 hours, the most likely explanation is that it hasn’t reached (or remained at) the tender range of 195–205°F—or it’s been slowed by the stall, low oven heat, or lack of coverage.