A small ceremony was held this past weekend on the shores of Onondaga Lake Park in Syracuse, New York. After some socializing, there were speeches from a state senator and area curator as well as appearances by two local actors in period clothing impersonating 19th-century barkeeps. The event culminated with the unveiling of a new marker that recognizes a storied potato dish with outsized influence. “It’s amazing how much can be tied to one little spud,” says Robert Searing of the Onondaga Historical Association, “but it’s all there.” The marker…