May I recommend the Aviator cocktail? Recipe below. The liqueur may be a bit challenging to find, but worth it.
Ingredients
Ice
2 ounces gin
1 ounce maraschino liqueur (has nothing to do with maraschino cherries, but you can add one of those at the end)
1 1/2 teaspoons fresh lemon juice
1 lemon twist
Directions
Fill a cocktail shaker with ice. Add the gin, maraschino liqueur and lemon juice and shake well. Strain into a chilled martini glass and garnish with the lemon twist.
Enjoy responsibly. Cheers.