To make a classic martini, you need 1 ½ oz of London dry gin, 1 ½ oz of sweet Italian vermouth, a dash of orange bitters, a tsp of sugar syrup, a small piece of lemon peel, and a green olive for garnish. Mix the gin, vermouth, bitters, and syrup, pour the mix into a martini glass, twist the lemon peel over the drink, and drop the olive in.