Grinding your own spices makes a significant and noticeable difference in taste due to the increased potency and freshness of the volatile oils released. Pre-ground spices lose flavor over time.
When spices are ground, their aromatic oils, which contribute significantly to their flavor, are released. In pre-ground spices, these oils dissipate over time, leading to a weaker and often duller flavor profile. Grinding your own spices right before use ensures that you're capturing the full intensity of these oils, resulting in a brighter, more vibrant, and more complex flavor in your dishes. The difference is especially noticeable with spices like cumin, coriander, peppercorns, and nutmeg. The fresher the spice, the more pronounced the flavor. Think of it like the difference between freshly brewed coffee and instant coffee – both are coffee, but the experience is vastly different. The same principle applies to spices.
To maximize the flavor of your freshly ground spices, lightly toast the whole spices in a dry pan over medium heat for a few minutes before grinding. This further enhances their aroma and flavor. Be careful not to burn them!