Louie's Oyster Bar & Grille in Port Washington is now Louie's Grill & Liquors, and has a new chef and menu. If there’s one restaurant on Long Island you don’t expect to be surprised by, it’s Louie’s Oyster Bar & Grille. The Port Washington stalwart, which started life in 1905 as a barge in Manhasset Bay, has stood on its waterfront perch for more than 50 years, serving a menu of American seafood classics. But Louie’s — now, formally, Louie’s Grill & Liquors — has hired an acc