This is another product that we have taken from the internet which looks as if it can be applied to solve other problems. It is constructed from an old solar dish and concentrates the sun’s heat onto a heavy duty pot to cook the food. The temperatures generated are very high so whilst boiling water is feasible, it might also work to heat up a water mass(heat sink) in the hoop house during the day to try keep it warm during the evening when the seasons move to a colder period.
An offshoot of this idea which we would like to explore further is the possibility of using this tool to melt re-cyclable plastic. Details of the build will follow.