I recently asked for the recipe, and she laughed ... and it’s delicious." Do you have a survival meal of your own to add? Tell us in the comments or drop it into this Google form.

The ability to prepare meals when the lights go out is a critical survival skill. Several methods can be employed, from using alternative heat sources to harnessing the power of the sun.

This recipe makes two (four if needs be) fudgy brownies to be snaffled straight from the tin. It is worth keeping takeaway-style foil tins in the house just to make these. Take my word for it ...