White mold on surface

Hi folks.
I have a batch destined for vinegar (on purpose).
It's almost dry and I expect to add my vinegar starter soon.
I have a whitish/translucent film on the surface that looks like it's a mold.
What should I do?

 

Nevermind that this is going to be vinegar.
What would you do if this was regular hard cider?

 

Maybe post a photo of it, though I'm not sure how useful that'll be. Searching the cider forum for "pellicle" brought up lots of different posts but not a lot about how to deal with them. Even Google wasn't much help beyond, "dump the batch and burn the barrel". Dunno what to tell ya.

 

Thanks you two.
I'd post a pic but it will look exactly like every pic posted if I Google "white mold on cider".
White molds are rarely dangerous (think Salami or other fermented sausages) so I guess I'll let it ride for now.