Tarragon is popular as a cooking herb for its flavor that is somewhat akin to licorice and fennel. A popular usage of Tarragon is in Bearnaise Sauce and it is also one of the fines herbes of French cuisine. Another popular use for Tarragon is in crafting Tarragon vinegar. Tarragon lovers describe the flavor as a midway point between rosemary and basil two herbs that are often associated with winter and summer respectively. | Tarragon is a popular kitchen herb used in chicken lasagna and egg dishes. An invigorating aroma.