$299 at GoSun The Haines SunUp Solar Cooker has an easy set-up that uses the sun and a simple Dutch oven (included) to cook one-pot meals. You’ll be grateful to have this when the power is out ...

Today’s solar ovens are more sophisticated than the one invented by Swiss scientist Horace-Benedict de Saussure in 1767. One ...

but we have had a more conventional solar oven or two. This dish-based solution would probably benefit from a sun tracker.

Have any of you tried cooking in a hot car, or would we need a solar oven? Give us your views in the comments.

The exact process varies by design but all solar ovens usually require highly reflective materials, for example, aluminium foil or glass, which she has used for her oven. "They should both be set ...