HanSolo's recent link to the page on portion control reminded me of one of my favorite and most helpful statements in Heather's book on how to safely have a little bit of solid chocolate (see below). I came upon this same technique myself by trial and error several years ago and it definitely works for me!
I only eat Hershey's Special Dark (no milk -- I don't even like milk chocolate anymore) and I limit myself to one bite/section/piece per day. That part was sheer willpower at first but now it's second nature, a habit that I do without even thinking about wanting more. That one little bite (after an IBS safe meal) gives me that wonderful chocolate taste and mouth feel and completely satisfies me in a way that all the imitation substitutes don't. I don't eat any other sweets to speak of, so this is my only splurge. Again, it may not work for everyone, just wanted to share my experience!
Here's the quote from Heather: "However, if your symptoms were well under control and you instead decided to treat yourself to a snack-size individual Snickers bar (a tiny portion equals a tiny quantity of fat/dairy triggers) for dessert, immediately following a nice low-fat, high soluble fiber meal, you'd likely do just fine. I eat solid chocolate almost every day in this manner. (Of course, this may just be sheer willpower because as God is my witness I will not go through life without chocolate, but I think this is probably the less likely explanation.)"