Citrus background with light floral note. This unusual gin changes from deep purple to pink when 'full sugar' tonic is added. (NOT SLIMLINE TONIC) The change of colour works due to the PH change when tonic is added and slimline tonic whilst perhaps delicious does not change colour. Colour may also revert to clear in strong sunlight. The Butterfly Pea Flower is a violet coloured botanical from South East Asia and guaranteed to cheer up a lockdown.