Sun-dried Tomatoes are ripe tomatoes which are placed in the sun to remove most of the water content from the tomatoes. Cherry types of tomatoes will lose 88% of their initial (fresh) weight, whilst larger tomatoes can lose up to 93% during the process. So it takes anywhere from 8 to 14 kilos of fresh tomatoes to make a single kilo of sun dried tomatoes. Sun-dried tomatoes can also be preserved in olive oil, along with other ingredients such as rosemary, basil, tomatoes, dried paprika, and garlic.