Make the syrup by heating together the water, lemon zest and the sugar. Bring to a boil, take off the heat and allow to infuse until cool. Bring back to a boil and immediately add the lemon verbena leaves. Take off the heat and allow to infuse until cool.

Strain the syrup into a bottle or jar in the fridge until needed. Discard the lemon verbena leaves.

To make Lemonade: start with 1-2 oz of syrup in a glass and add water to taste. Serve with ice and garnish with a lemon verbena leaf and a lemon slice.

To make a Twist: Add 1 oz of vodka and splash of soda water.