As reported in February, former Jon’s Street Eats guy Jon Kosorek has returned to Oakland after a stint up in wine country. And this week he’s opened a new whole-animal, meat-centric lunch spot called Marrow (325 19th Street). He’s posting the menu on Twitter each day, and today it features things like a grilled cheese, a patty melt, a Reuben, a green goddess salad, and creamed chipped beef on toast. It’s lunch only for now, with hours from 11 to 3. And you can expect some burgers in its future. [Scoop, Earlier]