Cut the lemon into small cubes. Put all but 1 lemon cube, the basil, and brown sugar together in a glass and muddle until the consistency of a paste or jam. Fill a glass with ice. Pour rum and sweet and sour mix into shaker without ice. Put cap on and shake; this blends the spirit with the mixer and creates a "froth". Strain into glass and stir. Garnish with small spring of basil and cube of lemon and serve immediately.
Professional Recipe: This recipe was provided by a chef, restaurant or culinary professional and makes a large quantity. The Food Network Kitchens chefs have not tested this recipe in the proportions indicated and therefore cannot make any representation as to the results.