Pull up a hammock, select a good book and make a jug of this cooling lemonade to refresh you as you gently sway and wile away the long, hot hours! A simple zingy lemonade syrup that is added to water to dilute and is compulsory for hot, humid days! Lemon Verbena is one of my favourite herbs and is a welcome addition to my walled herb garden here in France. The syrup is also amazing if poured over ice creams and summer berries for a tangy citrus flavour. Add an attractive label and a sprig of lemon verbena leaves for a thoughtful summer gift.