Combine ingredients, stir with ice, strain, then pour into chilled Old Fashioned glass. Express lemon zest on glass rim and on drink's suface, the drop lemon peel into drink.
Somewhat bitter due to both the Gran Classico and the gin, but the Cocchi Americano and Salers give a pleasant sweetness to the drink. Using less gin will lessen the bitterness, and using less Cocchi Americano will lessen the sweetness. The lemon zest gives a tartness that adds even more flavor and depth to the drink. Mix, stir, strain, and enjoy!