Hi Lisa. I'm so happy you liked the recipe. Well not sure what flour and sugar is used as it was actually sent to me by my Canadian friend. I have not tried it myself. I just posted it as thought others on here would like it. How cool there's another chocoholic on here haha. Well I don't do healthy eating so this recipe sounds like too much of an healthy option to me which explains why I haven't tried it haha. Well Vinegar is. Oh I'm not quite sure how to explain it even though I know what it is. I don't know how to put it into words. OH it's not like me to be lost for words of course haha. All I can say is that I put it on my chips along with salt as I'm sure lots of others do and of course it's used a lot in recipes too just like this one. It's in a bottle. I'm sorry I'm not more help. Maybe someone else will come to my rescue here. Love Clare xx