<P> The specialty cocktail drink known as the Hand Grenade is sold frozen or on - the - rocks exclusively by 721 Bourbon, Inc. through five licensed nightclub bars in the New Orleans French Quarter . Pam Fortner and Earl Bernhardt, owners of the Tropical Isle bar founded during the 1984 Louisiana World Exposition, created the melon - flavored Hand Grenade as their signature cocktail . Since 1987, the federally registered trademark "Hand Grenade" has been used to uniquely identify the cocktail and its packaging . Since January 1992, the Hand Grenade has been served in a green, translucent, plastic yard glass container with a bulbous, textured base shaped like an oversized hand grenade . The grenade has anthropomorphic features, including black oval eyes and an upturned smile . Printed in bold, black lettering, the legend extends vertically down the neck, with the cocktail name and a reference to its high alcohol content: "Hand Grenade ® New Orleans Most Powerful Drink". Consumers purchasing Hand Grenade cocktails in these containers receive discounts on refills at the licensed establishments . In January 2012, a lower - calorie "Skinny Hand Grenade" was announced . </P> <P> 721 Bourborn, Inc., doing business as Tropical Isle, holds five federal trademark registrations for its Hand Grenade ® family of marks, including "Home of the Hand Grenade" for bar services and other registrations protecting its prepared alcoholic cocktails, nonalcoholic mixes and syrups, as well as energy drinks . Only five establishments, all in the French Quarter, are licensed to sell Hand Grenade ® cocktails . They include Tropical Isle Original, Tropical Isle Original Papa Joe's, Tropical Isle Bayou Club & Music Bar, the Funky Pirate, and the New Orleans Grapevine . </P> <P> Tropical Isle's recipe is marketed as a proprietary trade secret that only a handful of people know (though you can buy the mix directly from them to make at home, with its ingredients listed on the side and directions as to what alcohol to add is listed on the back), and the employees and licensees are required to sign confidentiality agreements pledging not to reveal it . Tropical Isle believes that the secrecy increases the drink's mystique . That has resulted in large - scale speculation over the ingredients, and several variations of possible drink recipes on the Internet . That has led Tropical Isle to declare on its Website that any drink or recipe claiming to be a Hand Grenade is fake and illegal . They also state that they are pursuing legal recourse against such impostors, and they offer a $250 cash reward "to anyone furnishing information that leads to the identification and termination of the illegal use of our federally registered trademark". </P> <P> Tropical Isle has taken legal action, or threatened to do so, against several businesses for selling drinks under the name Hand Grenade or Grenade (e.g., DeRe' LaRouge in Hattiesburg, MS) and for marketing similar looking and tasting products . </P>

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