Dried mint generally has a more concentrated and intense flavor than fresh mint, but it often lacks the bright, refreshing notes found in fresh mint. The drying process diminishes some of the volatile oils that contribute to the fresh, cool taste.
The difference in flavor between dried and fresh mint stems from the drying process. Fresh mint leaves contain a higher concentration of volatile oils, particularly menthol, which gives them their characteristic cool, refreshing, and slightly sweet flavor. When mint is dried, these volatile oils evaporate, leading to a reduction in the overall brightness and complexity of the flavor.
However, the remaining flavor compounds become more concentrated. This means that dried mint often has a stronger, more pungent mint flavor than fresh mint. The taste can also be described as slightly more earthy or hay-like compared to the vibrant, green taste of fresh mint. The intensity of the flavor also depends on the quality of the dried mint and how it was stored. Poorly stored dried mint can lose even more of its flavor over time.
Therefore, when substituting dried mint for fresh mint in a recipe, it's important to use less dried mint than fresh mint to avoid overpowering the dish. A general rule of thumb is to use about one-third the amount of dried mint as you would fresh mint. For example, if a recipe calls for 3 tablespoons of fresh mint, you would use 1 tablespoon of dried mint.
To revive the flavor of dried mint, try gently crushing it between your fingers before adding it to your dish. This helps to release some of the remaining oils and enhance the aroma.