Polish Mustard Tag (Polish: Musztardowy Berek) is a traditional game played by Polish children. The game is an offshoot of Berek, the Polish version of Tag. The game is traditionally played with a bag of mustard seed but is now played with mustard bottles.
The game starts off with one player being made Berek, or "It", who must touch another player to make them Berek. The objective of the other players is to cooperate to prevent becoming Berek by passing around the mustard. Whoever holds the mustard is made immune and cannot be tagged. Whoever has the mustard will have to run towards the player being chased to give them the mustard before making their escape. The game ends when one person remains untagged.
Child 1: Berek! You have been made Berek!
Child 2: This is Polish Mustard Tag! I have the Mustard! I am not it!
Child 1: Kurwa!