Laws of Shabbat - 6

All food that is not completely cooked, whether it is a solid or a liquid, even if it is warm, when one places it into a the primary cooking vessel (kli rishon), even if it is not on the fire, it is a transgression of cooking. This applies both to foods needing to be cooked as well as foods that can be eaten raw. However, the trangression, as regards to foods that are eaten raw, is at the very least forbidden according to the Rabbis.