Spearmint leaves are infused in water to make spearmint tea. Spearmint is used for its aromatic oil, called oil of spearmint. Flavours include peppermint, cinnamon, spearmint, wintergreen and two sour flavours, cherry and apple. Other products include peppermint, spearmint, bamboo, medicinal herbs, apples, pears, peaches, loquats, ginkgo. The three most common flavorants are peppermint, spearmint, and wintergreen. Unlike oil of peppermint, oil of spearmint contains minimal amounts of menthol and menthone. Cadbury-Adams also manufactures "Certs Powerful Mints", available in peppermint, spearmint and wintergreen. Crushed pennyroyal leaves emit a very strong fragrance similar to spearmint. Australian varieties of Mentos are Fruit, Rainbow, Mint, Spearmint, Soft Drink and Smoothies. Spearmint is an ingredient of Maghrebi mint tea. The gum comes in two flavors&colon; Spearmint and Icy Mint. In addition to more conventional flavors, spearmint and lime flavored milkshakes became popular in Australia. Spearmint leaves can be used fresh, dried, or frozen. Studies have found significant antiandrogen effects in spearmint, specifically following routine spearmint herbal tea ingestion.