Guy Radford March 30th, 2010
When I go camping or do a course I like to try out new ideas with food and try to go as light as possible as if I was having to carry all my food.
I have done drying before and it is very easy and very successful. I am luckyI have access to an Aga and the warming oven is perfect, but even a normal oven can be used.
To start I wash a prepare all the tomatoes and mushrooms, they don’t need to be cut up too small as they will shrink by about 75%. I lay them out on a sheet I have non stick sheet a non-stick baking tray works just as well. Once you all done place when in the oven.

Tomatoes and Mushrooms ready to be dried
If you are using an Aga or simillar put the trays in the warming oven and leave to door just ajar to let out the moisture. With a conventinal oven turn onto about 50 deg Cenlcius, dont turn on the fan and again leave the door just open to let out the moisture. You may need to hold it open with something if it is a self closing door, I the past I used a tea-towel, but that is probably a fire hazard, so I suggest you try something better!
You need to leave to door ajar to let out the moisture otherwise they will cook and not dry out.
I find that for mushrooms and tomatoes they only take one night, timings will vary and it is not an exact science. Also as the process is slow the odd extra hour makes very little difference.
Once they are done, remove them from the oven and allow to cool before bagging them up. If you don’t let them cool first the condensation will make them go rotten.

Dried Tomatoes and Mushrooms
If you keep them in a dry, cool, dark place they should last for weeks, but you noise will tell you if they are ok.