Sam Sifton is going to have a lot of trouble remaining anonymous. Daniel Boulud was cooking at the Epicurious.com Entertains NYC event last week when he got word that the incoming Times food critic had popped into his flagship Restaurant Daniel. “Boulud thanked everyone and bolted back to the restaurant before serving dessert,” a source says. “He didn’t want Sifton to see his place running without him there.” The source said of Sifton, “The problem is that all the chefs recognize him. Daniel didn’t say hi, but he knew he was there.”