Add the whiskey, syrup and lemon juice into a shaker with ice and shake.
Strain into a chilled coupe.
Top with the beer.
Garnish with a lemon wedge.
*Ginger syrup: In a small saucepan, heat 1/2 cup fresh ginger juice (squeezed from freshly grated ginger root) until warm (but do not let boil) over low heat. Add 1 cup sugar, and whisk until sugar is dissolved. Store the syrup in a sealed container in the refrigerator until ready to use.