I'm looking to do a pork roast for dinner Christmas Eve night. I'd like to have some skin to crisp up and serve with it. If you've ever had schweinebraten in Germany, you may know what I'm talking about. I've been able to get this one german butcher to get roasts in with the skin but my results weren't great. I can't get to him now anyway. I've got one place that can get me porchetta, which has the skin tied on it. I've never had that and don't think it will be what I want. I'm going to Whole Foods soon and they said they have fresh hams with the skin on. What is "ham" as compared with what you would usually use for a roast? Is there any issue with this? Also, any advice on getting the skin crisp would be appreciated. Thanks much!