Slimy sus looking stuff in my Surfsides

So I literally just got back from the liquor store with a pack of refrigerated green tea Surfsides. I drank one, it was totally normal but when I was drinking my second one, i felt something thick go into my mouth and it was this slimy, baby gravy looking stuff. Should I throw away the whole pack orrrr 😭 does anyone know what this is?? Can’t find anything about this anywhere