Umbrella Solar Oven

A solar cooker (solar oven) made of an overturned umbrella with the material inside being shiny-mirror silver color, probably mylar is good enough. This umbrella is set upside down creating a parabolla "sattelite dish" shape, which concentrates the solar rays, to heat up the center.

A folding "pot holder" would be located in correct position to put pot on, which would balance the whole thing, and another folding contraption would hold a thin nylon cover, completely enclosing the pot, letting the light and radiation in, while keeping the heat in. Another addition may be an additional "external tripod" for changing the position of the upturned umbrella as needed to focus the rays with the changing position of the sun.

This would fold away just like an umbrella, and, when turned back upwards (without the pot of food of course), can double to serve either as a sun-shade or as an umbrella for the rain.