I understand several of the classic brews (Guinness and Old Speckled Hen) from the British Isles have forever used nitrogen to carbonate their draft beer. It delivers a dense head and a creamy body. I appreciate it in those cases, but it seems to be a bad idea when applied to other styles of beer. I do not enjoy Guinness Nitro IPA. Might as well leave the cap off a bottle of weak IPA and drink it the next day. It's that unsatisfying to me. As I walked through the grocery store today, to pick up lemonade and OJ (Really!), I went down the beer aisle and saw Sam Adams Nitro Project beers. Has anybody tried them? One is an IPA and I didn't catch the other. I think I would miss the carbonation that is typically present in other styles of beer.