Fresh herbs are great, but they can be expensive, hard to find, and soon wilted. Dried herbs are a wonderful way to add flavor to any dish, with no risk of rotting in your refrigerator. Modern drying techniques are excellent for preserving flavor and color - oregano, thyme, and rosemary especially lose very little in being dried. For most herbs, drying concentrates flavor, so use 1/3 the amount called for when substituting.