The Butterfly Peaflower (Clitoria ternatea plant) is a herb/flower commonly found in Thailand - its beautiful blue dye is popular in desserts and drinks.
It is a natural pH indicator and reacts when in contact with an acid, and it perfect for a natural experiment or crowd-pleaser.
Simple add 3-7 flowers to your choice of spirit (Nothing acidic) - We recommend Gin or Vodka. Leave to infuse until a dark shade of blue is achieved.
Simple pour a measure of your infused spirit over ice, and add an acidic mixer such as Lemonade or Tonic, to watch the colour change from Blue to bright Pink.