Chill your cocktail glass. Place it in the freezer or fill it with ice and water while you prepare the drink.
Combine all liquid ingredients – gin, maraschino liqueur, fresh lemon juice, and crème de violette – into a cocktail shaker.
Fill the shaker with ice. Seal it tightly and shake vigorously for about 15-20 seconds, until the outside of the shaker is well-chilled.
Discard the ice from your chilled cocktail glass.
Double strain the mixture from the shaker into the prepared glass. This ensures a smooth, ice-chip-free cocktail.
Garnish your Aviation with a maraschino cherry. For an extra aromatic touch, express the oils from a lemon twist over the drink and drop it in, or discard it.