If you get garden catalogues, as I do, you may have noticed this type of advertisement:
Giant Tomato - AS SEEN ON TV - SUPERSIZE YOUR TOMATOES with the Giant Tomato which zooms to an Amazing 8 Feet in Just 90 Days! Each Set You Order Contains Plants!or
AMAZING Egg Tree 15 Seeds-Grow Indoors/Out-Edible Fruit Of course, a little research will uncover that these are not very amazing at all, plants that are neither tomatoes nor, of course, eggs. So it was with quite a bit of skepticism that I read about hardy kiwi vines, which survive temperatures of -25degrees F. These advertisements typically note that the hardy kiwis are the size of grapes. "Sure," thinks I "Grow on vines, hardy, size of grapes...they're probably some kind of furry grape."
To my surprise, I came across these today at the Evanston Farmer's Market:

A query revealed that they were, indeed, the hardy kiwis of plant catalogue fame (they also had hardy figs, of which I am EXTREMELY jealous) and that the vines were growing over a trellis. I tasted one, and, yes - they are unquestionably kiwis (to the extent that the hard ones are nearly inedible, and the soft ones have the same bright-sweet flavor with a crunch of seeds in the middle, just on a smaller scale, and the bonus is they don't need peeling.
Here's a shot with an average-size sunflower seed for scale:

Apparently the vines grow like crazy, but can take years to set fruit - but can be grown in containers, as they don't really care if the ground gets frozen! I think I'll be getting some next year...