San Francisco’s Black Jet Baking Co. is one of those neighborhood gems known for a little bit of everything: Nostalgia-inducing pies, delicious breakfast sandwiches and the most perfect dark chocolate chip cookies. But it’s one treat in particular that has this beloved little Bernal Heights bakery on the fast track to fame: Its gourmet, seasonal take on the Pop-Tart, which owner Gillian Shaw Lundgren and head baker Max Newman have been evolving since they first met 20 years ago. “That’s how our... Read this story