Richard Engel can tell Shi`ites by their...cups

"Where Engel earlier said his kidnappers were Shia, they were actually Sunni. But, Engel said, "The group that kidnapped us put on an elaborate ruse to convince us they were Shiite Shabiha militiamen," including using specific accents and the presence of Shiite cups and music. "  What about their potatoes, Mr. Engel? Are they distinctive as well?  (thanks Basim)