Not sure what to do with this....

theycallmemrmoo thought this was worth mentioning said
2

Got my instant regret kit from the last meh-rathon. In it I got a “TaC brew tea water outlet”. Googling it just give me the full units. It kinda looks like a water bottle topper with a metal ball inside (my second thought was ramune for scalding hot tea). Maybe it’s a replacement piece? I’m not sure. Anyone have any ideas?