I do know that you can cook it. It (two of them) is a crafting quest item along with 2 hard biscuits.
The hardest thing about cooking these roast pork is getting the common mushrooms!
Sounds yummie! A Farmer is supposed to be able to raise them, but I am having trouble finding the correct seeds (or whatever) to grow them.... I will try to come back here and post something if I find out!