For more recipes like this, Join Maggie's Food Club
Step 1: Fill a jug with three large handfuls of ice. Pour enough soda water to cover the ice, approximately three quarters of the volume of the jug. Fill the rest of the jug with chilled Verjuice. Bruise the mint sprigs by squeezing gently in your hand, before pushing them down into the liquid and ice. Pour into individual glasses and top with extra mint if desired.