Cocktail of the week: Cahoots Postal Office’s black market blend

This is a riff on the Rob Roy, the 19th-century cocktail consisting of scotch, sweet vermouth and bitters. To bring a more approachable edge to the drink, we’ve added blueberry and chocolate flavours, which bring out the dried fruit, citrus and vanilla notes in the whisky.

The black market blend

40ml good Scotch whisky – we use Dewar’s 12-year-old
20ml white port
10ml crème de cacao blanc liqueur
5ml blueberry syrup
2 dashes chocolate bitters
1 wide strip orange peel, to garnish

Measure the liquids into a boston glass filled with ice and stir to combine. Strain into a nick & nora glass, garnish with the orange peel and serve immediately.

• Michelangelo Marino, bar manager, Cahoots Postal Office, London SE1