Sourdough became all the rage during the pandemic, as people stuck indoors embraced baking as both a pastime and a small act of self-sufficiency. It’s no surprise, then, that the trend has now, a few years later, creeped into the kosher world: Se’or Pizza is a new kosher eatery at 3005 Avenue K in Brooklyn’s … Se’or Pizza is a new kosher sourdough pizzeria in Brooklyn