Celeriac & parsnip leaves

[Primrose]

This is probably the wrong time of the year to ask, but does anybody do anything useful with their celeriac & parsnip leaves when they harvest them (apart from consigning them to the compost heap?).

I know they have a rather strong flavour but I was wondering whether they could be dried down and used as a herb for flavourings, stews, etc.

I've occasionally put a very small quantity of chopped celeriac leaves in a mixed salad, but have never tried drying them and wonder whether it would be worth doing, and if so, what's the best way of drying them.

[PLUMPUDDING]

Celeriac would be OK, like celery, but I'd be wary of using parsnip leaves as they contain a chemical (furocoumarin) which makes your skin photosensitive - blistering in sunlight. Cooking would probably destroy it, but I wouldn't want to try it.