What is the Best Reflective Material for a Solar Cooker?

[LastXdeth]

I am planning to build a http://solarcooking.org/plans/DATS.htm" that van cook food as fast and hot as possible. I was wondering what is the best reflective material for concentrating the sun's rays into a single point.

A standard mirror is obviously the best because it's 100% reflective, but it's not flexible enough considering the satellite shape of the cooker. I was thinking of http://www.cascadelaser.com/mhr2x75.html" .

I was wondering if they're better alternatives.

Thanks!

 

[kjr]

Just a thought, not sure how well it would work, but if you got some metallic paint, sprayed it onto a dish and polished it to mirror shine it might have properties good enough for what you need.

I think getting 100% would be pretty expensive and unfeasible for this purpose, but some less effective alternatives might just do the trick.