Cut lemon in half and squeeze the juice into shaker. Add the Blue Curacao, Triple Sec, Water and Sugar into the shaker and shake vigorously until the sugar is completely dissolved.
Add sugar to a dessert dish. Rim the martini glass with the remains of the lemon half and place in the sugar.
Add Bacardi Limon Rum and Ice to the shaker and shake vigorously.
Pour in the sugar rim martini glass and serve.
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