not done any yet, i went to get some haws the other day but didnt know if they were ripe or not, there's not much flesh on them! i've got a recipe for hawthorn jelly though, looks good, even though i have no idea how it might taste! here it is -
Hawthorn Jelly Recipe
thats a good site, lots of interesting ideas.
i was going to do something with rosehips too, but i cut one open and it didnt look very appetising!