Dried rosemary

Dried rosemary is the needle-like leaf of Salvia rosmarinus, reclassified in 2017 from its two-century home in the monotypic genus Rosmarinus officinalis into Salvia on the strength of molecular phylogenetics that proved it nested within the sages. The shrub is an evergreen perennial of the Lamiaceae family, native to the rocky limestone coastlines of the western Mediterranean where it thrives on salt spray, thin soil and brutal sun. Its essential oil is built on a three-part backbone: 1,8-cineole (eucalyptol) gives the camphoraceous lift, camphor itself carries the medicinal punch, and alpha-pinene plus borneol provide the pine-resin depth; chemotype variation is dramatic, with Tunisian and Moroccan oils running 1,8-cineole-dominant at forty to fifty-five percent, while Spanish and French oils lean camphor-dominant. The dried leaf is the Mediterranean workhorse: the signature herb of Tuscan focaccia al rosmarino, Ligurian focaccia di Recco, Provencal herbes de Provence, Spanish romero asado lamb shoulder, Moroccan tagine kefta and Tunisian chorba; it anchors every serious roast potato north of Naples, coats agnello alla cacciatora, scents the bread in Umbrian pan co' santi and perfumes the gin in Mediterranean distilleries from Menorca to Mallorca. Because its oil is held in tough sclerophyllous leaves designed to resist summer drought, dried rosemary retains far more aroma than most dried herbs.