Providence, Michael Cimarusti's culinary temple celebrating the wonders of seafood, has quickly become a byword for exquisite dining in Los Angeles. One can hardly fathom the pleasures of eating wildly creative and delicately presented dishes like razor-clam risotto or sea urchin scrambled eggs, let alone preparing them yourself. But for a lucky few who show up on Sunday, you can take advantage of a private cooking demonstration held by Cimarusti himself in Providence's kitchens......