In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Raisins
If you see ripe or unripe raisins then you will be bitter and disappointed. To eat raisins means you will be disappointed in your love life.