Combine the Super Green Juice, gin and Simple Syrup in a cocktail shaker filled with ice. Shake vigorously for 8 to 10 seconds. Strain into a martini glass. Garnish with a cucumber slice.
Juice, in this order, the lemons, apple, romaine, cucumber and greens, following your juicer's specific settings for each. Serve the juice immediately over ice, if desired.
Bring the sugar and 1 cup water to a boil in a small saucepan. When the sugar is completely dissolved, remove the saucepan from the heat and cool the syrup to room temperature. Refrigerate, covered, for up to 1 month.
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