The Cobra's Fang is a vintage tiki cocktail invented by Donn Beach that calls for a mixture of rums along with fassionola and falernum syrups, the juice of orange and limes, and a dash each of bitters and grenadine. The recipe from the book Hawai'i: Tropical Rum Drinks & Cuisine By Don the Beaschcomber calls for it being garnished with fresh mint and a lime wheel, although a length of spiral cut lime peel made to look like a snake is used for aesthetics in some cobra named cocktails.
As served in the early days of the Beachcomber restaurants, the Cobra's Fang was presented in a tall curved glass. Because some later drink menus from other restaurants showed the Cobra's Fang in a special snake shaped Tiki mug, there is debate over whether such a historical mug truly existed. Regardless, modern manufacturing of a replica for such a mug has taken place.