According to the classic alcoholic literature a one to a pair of quantitative relation between booze and cola is suitable, however honestly it might be higher to decrease to 7-8 cl of cola for five cl of booze, to stay the cocktail clean and crisp.
The booze and cola formula is incredibly easy: squeeze a lemon and strain juice
Fill a glass with ice, pour juice, booze and fill with cola. place a straw in it and garnish with a slice of orange.
A dash of Cardamom bitter is usually welcome
