The adults on the TV show "Blue Bloods" are often seen sipping beer during family meals, but it turns out they are not actually drinking alcohol. Donnie Wahlberg, one of the show's stars, revealed on Twitter that the bottles are usually filled with water. The actors use substances like carbonated tea or "Near Beer," a low-alcohol beverage, to simulate drinking in scenes. The use of fake drinks allows the actors to avoid getting drunk while filming multiple episodes over the show's 11-year run.