Here's an image

http://www.benjerry.com/our_products/flavor_details.cfm?product_id=64

I don't know that the font your friend has in mind resembles a 60s lettering style. It looks handmade to me. There are some great 60s Psychedelic fonts here, however:

http://www.fontcraft.com/scriptorium/psychedelic.html

it is hand lettered but does have a 60s vibe to it. I've mentioned that she put pen to paper but I don't think she's comfortable enough doing that.

Thanks for the link, however, hopefully something closer to that Phish Food lettering can be found.

here is the image:

Well... here's phishing for something:

Years and years ago, Phil Martin (and Steve Jackaman) designed Jolly Roger and there might have been alternates and swash available pre-digital.

Great. Will pass along that font seeing its as close as I think we'll get.

Thanks all!