How Long to Cook St. Louis Style Pork Ribs (3-2-1 Method) in the grill

Specification: 1 rack St. Louis cut pork spare ribs (3–3.5 lbs, squared cut with cartilage removed), membrane peeled, rubbed with savory rib rub

Target Temp

275°F (135°C)

Direct Flame

Total Time

180–210 mins

Total Cook Window

Flip Mark

90m

Turnover Point

Internal Safe Temp

195°F–200°F (91°C–93°C) internal

USDA Safe Pull

COOK MODE

Live timer · flip prompt · target temp · rest stage

Start cook

3-Step Execution Protocol

Preheat & Prep

Preheat grill to 275°F (135°C). Clean and oil grates. Prepare st. louis style pork ribs (3-2-1 method) (1 rack St. Louis cut pork spare ribs (3–3.5 lbs, squared cut with cartilage removed), membrane peeled, rubbed with savory rib rub).

Cook & Flip

Cook for 180–210 mins. Flip at the 90-minute mark for even browning.

Check & Rest

Bones peek out 1/2 inch from meat; rack cracks on surface and sags heavily when lifted from one end with tongs. Confirm internal temperature reaches 195°F–200°F (91°C–93°C) internal. Rest for 15 minutes before serving.

Verification Basis & Testing Rig

Kansas City Barbeque Society Competition Guidelines; National Pork Board Spare Rib Standards.

Pro Tip: St. Louis cut ribs have more fat than baby backs; cooking at 275°F for 3 to 3.5 hours on indirect heat renders the belly-side fat into rich, sticky bark.

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