Stir, strain, cocktail, orange twist
Some recipes call for dashes of Maraschino instead of the 1/4 ounce here. It is better to add sweetness or remove it by altering the Maraschino than the sweet vermouth.
The "Martinez Special" as made by Andy Arrington is 3:2 Ransom Old Tom : Carpano Antica, with 1 t Luxardo Maraschino and 2 dashes of Bitter Truth Jerry Thomas Decanter Bitters, and no garnish.
The T Martinez, and made by "T" of Bergamot in Somerville, MA is 1 oz each Gin and Carpano Antica, with 1 teaspoon Campari, and a dash each of Regans' Orange and Peychaud's.
The PDT Cocktail Book, pg 173