Looking for a St. Patrick's Day cocktail?McGillin’s at 1310 Drury St. in Center City is serving up an Irish Potato Martini that's an alcoholic twist on the sweet coconut candy — don't worry, there are no actual potatoes in this drink.To make it at home, combine:1 ¼ oz. Sweetened coconut milk1 ¼ oz. Whipped cream vodka1 ¼ oz. Malibu rum1 tsp. coconut tossed in cinnamon sugar