Culinary Herbs Defined
It may be said that sweet or culinary herbs are those annual, biennial
or perennial plants whose green parts, tender roots or ripe seeds have
an aromatic flavor and fragrance, due either to a volatile oil or to
other chemically named substances peculiar to the individual species.
Since many of them have pleasing odors they have been called sweet, and
since they have been long used in cookery to add their characteristic
flavors to soups, stews, dressings, sauces and salads, they are
popularly called culinary. This last designation is less happy than the
former, since many other herbs, such as cabbage, spinach, kale,
dandelion and collards, are also culinary herbs. These vegetables are,
however, probably more widely known as potherbs or greens.