Jerusalem artichokes

We brought back a sackful of these from the allotment. They're the last of the crop and I'm bored of my usual ways of cooking them. (OK, I was bored halfway through the very first batch, but they're easy to grow.)

Please! Does anyone have easy recipe ideas? Note: the idea is to use the buggers up. I am not interested in recipes which require "2 small Jerusalem artichokes".

Alternatively, if anyone in central Cambridge is pining for Jerusalem artichokes, I could probably spare a few...

If you're not sure what they are, or maybe call them by a different name, this is the vegetable I mean.

Apparently they have potential as biofuel. Mine certainly convert readily to methane...