Can you say beluga, sevruga, osetra? Petrossian can: It's the largest importer of Russian caviar in the world. Can you say foie gras? Petrossian can: The company's farms in France produce plump, silken specimens. Can you say expensive? Petrossian can, because it ain't cheap to get all that good stuff over here. Indeed you can ply your senses with twenty grams of sevruga for $23, or beluga for $47. But you should be aware that while for drug addicts, twenty grams is a feast, for caviar aficionados it's barely a snort. And if you're planning on accompanying those sturgeon eggs with champagne, be prepared for some bottles to run over the $400 mark. Needless to say the best time to dine at Petrossian is when you have grateful guests in the house. Allow them to think of the dinner check as room and board, and in the end, everyone -- especially your waiter (what's fifteen percent of $400?) -- is more than sensually sated.