perenneal vine for greenhouse?

[anitayork]

Hello. I am looking to plant some kind of vine (on a trellis across a wall) in my green room--one that is a perennial and that produces something to eat.

Can anyone suggest a vine that would both produce and grow year round? I've spent a lot of time looking on the Internet, but food growing vines seem mostly to be fruit, and I was thinking that one that produced edible leaves or pods might make more food.

Thanks,
Anita