Triangle K lemon flavored vintage seltzer is it kosher?
Depends who you ask. They claim they only use OU and Kof k certified flavors, but one of the OU Mashgichim (no names) that visit one of their bottling plants said that the manager of the plan said that the triangle K hasn't been there in years, so who knows. I guess if you rely on "lists", this ain't any worse.