This gem was unearthed by jeff beachbum berry, in his book potions of the carribean. Its attributed to max bilgrays tropic bar in the ithsmian canal zone, a u. S. Territory in panama where the canal was built. Dwight eisenhower, a junior officer stationed in the canal zone in 1922, often cashed his paychecks at the tropic bar, and we like to think that perhaps he might have sipped on a derby cocktail tropicl one hot summer afternoon. The derby cocktail tropicl is basically a julep with some fruit juice added in. Its unusual for being a recipe that originated in the tropics that doesnt use rum; when the recipe was printed in the south american gentlemans companion in 1950, bourbon distilleries in the us were up and running again after prohibition. The original recipe called for granulated sugar, which needs to be stirred with the lemon juice to create a slurry before other ingredients are added, to ensure that it evenly mixes into the drink. We prefer simple syrup for its superior incorporability, so weve listed it as the preferred ingredient here. If you do use granulated sugar, use half the amount listed.