The thought that springs to mind even before you’ve had a bite of Porchetta’s brand-new porchetta bánh mì: What took so long? Jenkins, an admitted bánh mì addict, already has a porchetta taco on the rotation, so a porchetta bánh mì always seemed to us like a no-brainer. It’s true, the trusty combination most Vietnamese sandwich shops list as a No. 1, consisting of various porky mystery meats, is hard to beat. But slow-roasted heritage-breed pork loins wrapped in bellies, combined with pickled veggies, Kewpie mayo, Sriracha, jalapeño, cilantro, and a squirt of lime is pretty much a match made in sandwich-mash-up heaven. They cost $10 each and will be available Thursday through Sunday, which means you can get your hands on one today.