On the heels of rumblings about a cupcake downturn, the folks at Magnolia Bakery’s uptown location write in to tell us that Orthodox Rabbi Yaakov Spivak has put the United Kosher Supervision’s stamp of approval on its buttercream-frosted cupcakes and other heart-exploding treats. Ingredients will now be sourced from kosher vendors, and the UKS's regulations are in full effect. Mazel tov!