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How do I heat 120# of ham without it drying out?
I need to heat 120# of ham in electric roasters. How much can I put in an 18 qt. roaster, at what temp, for how long and how do I keep it from drying out? Do I keep them together or separate the slices? These are boneless and sliced hams.
I would do about 20 pounds per roaster. Use heavy duty foil, flatten out and layer the slices to make a packet 1 inch thick, add about 1/4 cup moisture (apple or pineapple juice, soda, or chicken or ham broth), seal all the edges with butcher wrap folds to make the packets moisture tight.

Preheat the roasters to 325-350 for at least 20 minutes.

Keep the lid on while reheating.

Allow at least 10 minutes per pound, until a meat thermometer registers 140 degrees F. Remove from oven and let sit for 10 minutes before serving.

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