BACKGROUNDMy husband is not a fan of sourdough, although everyone else in my family loves the stuff. He won’t eat any bread if he detects the merest hint of sourdough flavor. When I happened upon Swiss Farmhouse Bread in Jeffrey Hamelman’s Bread, which in Mr Hamelman’s words is characterized by “a complete absence of acidity,” I was curious. The bread was leavened by water in