Combine ingredients into a cocktail shaker with ice (You may want to add 1 tsp simple syrup for a little more balance). Shake and strain into a cocktail glass. Optional lemon twist garnish.
A Spontaneous Libation for your Consideration
1 oz Gin
1 oz Herbal liqueur, Green Chartreuse
1 oz Lime juice
1⁄2 oz Dry vermouth
1⁄4 oz Blue Curaçao (Maybe a little less-mostly needed for color purposes)
1 twst Lemon peel (optional)