Will it be possible to fry eggs in [Sahara desert](http://en.wikipedia.org/wiki/Sahara_Desert_%28ecoregion%29) by just keeping them under the sun? If so, then will the radiated eggs be any different? Or will we have to use the [solar cooking](https://en.wikipedia.org/wiki/Solar_cooker) concept to some extent? What is the minimum Intensity required and the temperature to achieve this?
(With and without solar cooker)