1 can (6 ounces) frozen orange juice concentrate, thawed
1/2 cup butter, melted
1-1/2 to 2 cups ground walnuts
In a bowl, combine the sugar, wafer crumbs, orange juice concentrate and butter. Shape into 3/4-in. balls; roll in walnuts. Cover and refrigerate in an airtight container for at least 24 hours before serving.