How Long To Cook Precooked Ham?
QUICK ANSWER
Reheat precooked ham 10-15 minutes per pound at 325°F (165°C). 6-lb ham 60-90 min; 8-lb 90-120 min; 10-lb 100-150 min; 12-lb 2-3 hours. Cover with foil for first 2/3 of cooking to prevent drying. Internal temperature 140°F (60°C) - it's already cooked; just heating through. Apply glaze last 20-30 minutes only.
Precooked ham (also called 'fully cooked' or 'ready to eat' ham) is what you find at nearly every American grocery store. It's already been cured, smoked, and cooked at the processing facility - your job is just to reheat it to serving temperature and add a glaze. This is the easiest holiday centerpiece: no risk of undercooking (already safe), just heat through gently to preserve moisture.
How long do you cook precooked ham?
Timing depends on weight and type. At 325°F (165°C, standard): 10-15 minutes per pound. By weight: 4-lb ham 40-60 min; 6-lb 60-90 min; 7-lb 70-105 min; 8-lb 90-120 min; 10-lb 100-150 min; 12-lb 2-3 hours; 15-lb 2.5-3.5 hours; 20-lb 3-4 hours. By type: bone-in whole precooked ham 10-15 min per pound; spiral-cut precooked 10-14 min per pound (dries faster); boneless 12-15 min per pound; canned ham 15-20 min per pound. At 300°F (gentler, more moisture retention): add 3-5 min per pound. At 350°F (slightly faster): subtract 2-3 min per pound. The internal temperature target is 140°F (60°C) for reheating; 160°F for extra safety per USDA. Precooked ham is already safe - just heating through is the goal.
How do you cook precooked ham properly?
Moisture retention is the key. Step 1: verify precooked status (label says 'fully cooked' or 'ready to eat'; most grocery hams are precooked). Step 2: preheat oven to 325°F. Step 3: place ham in roasting pan; add 1 cup water, apple juice, or ginger ale to bottom (steams to prevent drying). Step 4: score the fat cap in a diamond pattern for whole hams (helps glaze absorption); insert whole cloves at intersections if desired. Step 5: cover TIGHTLY with heavy foil (tented to not touch ham); this is essential to prevent drying. Step 6: bake to internal temp 130°F. Step 7: apply glaze in last 20-30 minutes only - brown sugar-mustard classic; brush 2-3 times for depth. Step 8: remove foil for last 20-30 minutes to caramelize glaze. Step 9: continue baking until internal reaches 140°F. Step 10: rest 15-20 minutes tented with foil. Step 11: slice thin against the grain. Save the bone for split pea soup.
How do you know when precooked ham is heated through?
Internal temperature is the gold standard. Use an instant-read thermometer in the thickest part avoiding bone; 140°F (60°C) is the reheating target; 160°F for extra safety per USDA; can remove at 135°F as carryover finishes. Visual cues: exterior caramelized golden-brown from glaze; ham should be steaming hot when sliced; no cold spots. Texture: ham should be moist and tender; slices should be juicy. Don't undercook - unpleasantly cold in center; not a food safety issue since ham is already cooked, but disappointing. Don't overcook past 150°F - ham dries quickly; the difference between juicy and dry is 10-15°F. The sweet spot: 140°F internal with caramelized glaze exterior.
Tips for the best precooked ham?
Several techniques produce great precooked ham. Verify the label: 'fully cooked' or 'ready to eat' means precooked. Cover tightly with foil: essential for moisture retention. Add liquid to pan: steams ham during heating; try apple juice, ginger ale, or Coke for flavor. Score the fat cap: allows glaze absorption. Apply glaze last 20-30 min only: burns if too early. Brush glaze 2-3 times: builds depth. Rest 15-20 min: juices redistribute.
Reheat precooked ham 10-15 min per pound at 325°F. 8-lb 90-120 min; 10-lb 100-150 min. It's already fully cooked - just heating through. Cover TIGHTLY with foil first 2/3 to prevent drying. Add liquid to pan. Apply glaze last 20-30 min only (burns if too early). Internal temp 140°F. Rest 15-20 min. Verify label says 'fully cooked' or 'ready to eat' - most grocery hams are precooked. Save the bone for split pea soup.
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