Marseille

Chill a martini glass by filling it with ice water and setting it aside.

In a cocktail shaker, combine the dry vermouth, freshly squeezed lemon juice, and simple syrup.

Add a few dashes of orange bitters to the shaker.

Fill the shaker with ice and shake vigorously until the mixture is well-chilled.

Discard the ice water from the martini glass and strain the cocktail into the glass.

Garnish with a knot of lemon peel, ensuring the oils from the peel are expressed over the drink.