I screwed up there just a little bit as I bought a bunch of fresh rhu frm Tesco & cooked the lot up with a little water and nothin else - God, itz tricky thinkin about everything as b4, when I was counting calories (yawn), rhu was a fave thing to eat as itz so low!!! I reckon if the bunch weighed around 400g (raw), then it cost me one syn...???
I made rhubarb crumble (from the sw mag recipe) for pudding tonight and it was lovely. 7.5 syns for the lot, which I don't think is too bad! I felt like I was having proper pudding.
Don't stress yourself out about something so low syn - it won't make much difference if you do it once. Like Taz said, if you'd made the mistake with something megasyns then be worried, but rhubarb isn't going to make you gain, I would put money on that