What size gammon do I need?!

[Jungfraujoch]

Need enough for a slice with the turkey plus leftovers.
Feeding 9 on Christmas Day and 4 Boxing Day.

Thanks.

I cooked gammon for dinner yesterday. A 1.3kg joint gave 4 of us at least 3 slices each, (not wafer thin but not doorstops) plus two slices for my lunch today and there is still enough for lunch for DH and I tomorrow. I reckon that's about 18 slices.

For Christmas I'll probably get something just a little bigger - about 2kg. There are 6 for both Christmas Day and Boxing Day. Anything that's left over I'll wrap in foil and stash in the freezer for sandwiches.

Thank you. X