Hoja santa (Piper auritum, synonymous with Piper sanctum) is an aromatic herb with a heart-shaped, velvety leaf which grows in tropic Mesoamerica. The name hoja santa means "sacred leaf" in Spanish. A Mexican legend says that Virgin Mary dried diapers of the infant Jesus on the bush of this plant, hence the name. It is also known as yerba santa, hierba santa, Mexican pepperleaf, root beer plant, and sacred pepper.
The leaves can reach up to 30 centimeters (Expression error: Missing operand for *. ) or more in size. The complex flavor of hoja santa is not so easily described; it has been compared to eucalyptus, licorice, sassafras, anise, nutmeg, mint, tarragon, and black pepper. The flavor is stronger in the young stems and veins.
It is often used in Mexican cuisine for tamales, the fish or meat wrapped in fragrant leaves for cooking, and as an essential ingredient in Mole Verde, the green sauce originated in the Oaxaca region of Mexico. It is also chopped to flavor soups and eggs. In Central Mexico, it is used to flavor chocolate drinks. In southeastern Mexico, a green liquor called Verdín is made from hoja santa. American cheesemaker Paula Lambert created "Hoja santa cheese", the goat's milk cheese wrapped with the hoja santa leaves and impregnated with its flavor. While typically used fresh, it is also used in dried form, although drying removes much of the flavor and makes the leaf too brittle to be used as a wrapper.
The essential oils in the leaf are rich in safrole, a substance also found in sassafras, which has been shown to be carcinogenic in animals. In 1960, the U.S. Food and Drug Administration banned sassafras bark along with sassafras oil and safrole as flavoring agents because of their carcinogenic properties and the Council of Europe imposed the same ban in 1974, so the safety of flavoring food with hoja santa remains questionable.
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