Their act is a bit like the good cop-bad cop routine. Asparagus is sweet, fresh, and clean-tasting ― delicate. Tarragon is racy, aggressive, and prone to take over ― bold. Together, they’re a classic, with each bringing out the finest in the other. The effect is best when the tarragon is fresh. Unlike the dried herb, which has an aniselike intensity, fresh tarragon can be used with a free hand.