@TAFKAT has rolled barley for me for 7 or 8 years , applying acid to it . He doesn't supply the acid , but a mutual aquiatance does . One year "Propcorn " was not available . The alternative was unfit for purpose , imo. It was heating by the the end of January . Propcorn does what it says on the tin . If its not available , I may have to question bothering with that operation .