Delicate herbs like basil, cilantro, parsley, and chives lose the most flavor when cooked for extended periods. It's best to add them towards the end of the cooking process.
The reason these herbs lose their flavor is due to their volatile oils. These oils, which are responsible for the herbs' distinctive aromas and tastes, evaporate or degrade when exposed to high heat for a prolonged time. Think of it like this: the longer you cook them, the more their essential oils escape into the air, leaving you with a less flavorful dish.
Here's a breakdown of why these herbs are particularly susceptible:
In contrast, heartier herbs like rosemary, thyme, oregano, and bay leaves can withstand longer cooking times because their oils are more stable and less prone to evaporation. These herbs actually benefit from simmering in sauces or stews, as their flavors develop and deepen over time.
To maximize the flavor of delicate herbs, add them during the last few minutes of cooking or even as a garnish after the dish is finished. This will ensure that their vibrant flavors remain intact and enhance your culinary creation.