Bamboo Cocktail (Difford's 'Perfect' recipe)
Orange zest twist
STIR all ingredients with ice and strain into chilled glass.
[['4.5 cl', 'Fino sherry'], ['3 cl', 'Martini Rosso sweet vermouth'], ['2.25 cl', 'Martini Extra Dry vermouth'], ['1 dash', 'Orange Bitters by Angostura']]
[['4.5 cl', 'fino sherry'], ['3 cl', 'red vermouth'], ['2.25 cl', 'dry vermouth'], ['1 dash', 'angostura']]