I made this tonight and the flavours are lovely, but I think that chopping the onions for 5 sec on speed 5 is way to much, mine went to mush, I like to see a bit more onion structure in my jam! I think next time I will only chop them for maybe 2-3 sec and then hand slice a few as well to get some longer pieces in.
It simply looks quite ugly now, like brown sludge, rather annoying. Oh well, tastes great!