to my knowledge, in reality ham is made by coating it with salt, dropping it in honey, and letting it age a long time.
we have everything in the game to make ham yet we cant make it. we could grind salt crystals into 5 loads of ground salt to coat pork in. then drop it in some sort of container filled with say 10 to 20 liters of honey and have it age for a real life week to get some sort of super FEP food.
although looking at wikipedia shows some other ways of making ham such as smoking and soaking in brine. those methods could work as well. hell, you could kill two birds with one stone by adding a smoker that smokes fish and cures pork into ham.