You sometimes wish Judith Jones had delved deeper in her culinary memoir, The Tenth Muse; Laura Schenone goes to the opposite extreme in her lovely but rambling memoir, The Lost Ravioli Recipes of Hoboken. (Gotta love that title.) ''I wanted something Enduring a recipe of my own that did not come from a cookbook or a culinary expert on a television show,'' Schenone writes of her decision, in midlife, to track down her family's hallowed ravioli recipe. But when a relative sent her the ingredient list, she was appalled to see supermarket cream cheese. Her quest for a more ''authentic'' ravioli takes Schenone from suburban New Jersey to the Ligurian mountains with countless digressions some scintillating, others less so on chestnut flour, the deeper meaning of dumplings, and the vicissitudes of marriage. B

