Is that a Starbucks cup in Game of Thrones?

Game of Thrones, the most closely watched and scrutinized show on TV, last night aired a huge moment of lore discontinuity, as a celebratory feast in Winterfell happened to include a distinctly modern takeaway coffee cup among all the metal goblets of wine. It’s not obvious who the offending coffee drinker on set was, or what flavor of Starbucks brew they enjoy, but the position of the cup was on the grand table of the nobles, in front of Jon Snow’s seat. It’s also not clear w