Dried fenugreek leaves have a very characteristic strong musky curry aroma with a slight bitter taste. This herb works beautifully when flavouring lamb and lentil dishes or dishes with a rich deep sauce.
Fenugreek is a wonderful Indian herb that comes from the Kasoor region in India. It is called Methi and used in a number of different dishes. The dried herb is used for flavouring and the fresh young leaves are used as greens, in a similar way that you'd use spinach.
The seed and ground spice are much more pungent so it's not a good idea to substitute the herb for the spice in a recipe.