One of the most effortless methods of preserving fruits and vegetables is through the process of sun-drying. Depending on the heat and intensity of the sun, this process can take several days when done out in the open air. However, as the weather conditions are not always favorable, it is recommended to utilize a combination of both natural and artificial heat sources. This can involve sun-drying in intervals and employing artificial heat sources such as a low oven, airing cupboard, top of boiler, or warming tray. In order to achieve optimal results, it is advisable to maintain a temperature range of 120° to 150° during the preservation process.