I thought this was an interesting idea.

The Soltac CookSack comes with:
CookSack - ultralight, inflatable parabolic oven, 1.5 oz/42 gm
Kettleblack™ - 1.5 qt/1.4l non-stick aluminium pot, 6.2oz/167 gm
Pinup™ - fastening clips, 0.4 oz/14 gm
Stringalong™ - tie-downs, 0.5oz/16 gm
Stuffnet™ - mesh tote, 1.0 oz/30 gm
Terralander™ - folding stand, 1.7 oz/56 gm
Yellowfin™ - fan & cutting surface, 0.5 oz/14 gm
HotTips™ - instructions for use

The inflatable parabolic oven caught my eye, and the overall small and lightweight setup has me thinking about giving one a try when the final product hits the market.

Soltac CookSack

What does everyone think?

I'm a little curious as to how well it will function when the inside becomes fogged with steam.

The standard disclaimer applies, I'm not affiliated with Soltac and I do not sell their products.

We sold something exactly like that at REI a few years back. It could not boil water only heat it to around 180 degrees F.
The bags were very fragile.

At first glance, they did not win anything at the CleanTechOpen this year:

http://www.cleantechopen.com/app.cgi/news/press_releases/23/view


A robust and compact solar oven of whatever workable design would be most interesting. In central California we have probably 7 or 8 months of potential solar cooking.