Tarragon is a herb that is commonly used as a seasoning in cooking, particularly in French cuisine. It has a distinct, anise-like flavor that is slightly sweet and slightly bitter.

Tarragon is often used fresh or dried and can be added to a variety of dishes, including soups, sauces, and dressings. It is particularly well-suited for use with eggs, chicken, fish, and vegetables. Tarragon is also a key ingredient in béarnaise sauce, a classic French sauce made with egg yolks, butter, white wine vinegar, and tarragon.

In addition to its flavor-enhancing properties, tarragon may have some potential health benefits. It contains compounds that may have anti-inflammatory and antioxidant effects, and may help improve digestion and regulate blood sugar levels.

When using tarragon in cooking, it's important to use it sparingly, as its flavor can be quite strong. Tarragon can be stored fresh in the refrigerator for up to a week, or dried and stored in an airtight container for later use. It can also be frozen in water or oil to preserve its flavor for longer periods of time.