Had our first FOG's tonight. Although I'm not really into sissy cocktails, I dig this one, mainly because overall it is VERY tart and the fresh orange juice combined with the shot of fresh lime juice produces a drink that is tangy and not sickly sweet. The falernum adds some interesting dimensions to the drink, but I am not sure what the flaming of the orange oil adds, perhaps some different levels of bitterness on top of the angostura. I like it. DeGroff is a genius.