Precursory Cocktail

Use 2:1 rich simple syrup for its listed portion.

Use these specified component styles: Carpano Antica Formula Vermouth.

Chill a cocktail coupe in preparation for serving.

Prepare a garnish by cutting a twist of lemon zest and a quarter wheel of orange.

Shake the tawny port, vermouth, sugar syrup, freshly squeezed lemon juice, Angostura aromatic bitters, and optionally, the orange bitters with ice until well chilled.

Fine strain the mixture into the pre-chilled cocktail coupe.

Express the lemon zest over the cocktail to release its oils, then discard the zest.

Garnish the drink with the quarter slice of orange on the rim of the glass.