The beer that taste like Chocolate

I was really surprised at this beer. I am not a big beer drinker but I was asked to try it.
It tastes like beer but when you swallow its dark chocolate. Sweet dark chocolate. In the back of your throat, so you want more and more. :)
The beer is surprising, very good, and costs about 6.00 US per bottle in the gourmet food store beer section.
It's called Trappistes Rochefort. I highly recommend it.