Uh oh, wonder if thinking of the preservative will ruin it for me now. Lol. It is a problem because they are sold in such big bottles and they last forever.
Sorry. My wife says I have ruined a lot of foods for her with my tasting comments... Sriracha is a standard condiment in pretty much every Vietnam/Thai hole-in-wall restuarant (which I love) so I totally understand the need for some kind of preservative in it.