Shimmering & Colour Changing Gin Infusing Kit - Make 15 Bottles of Your own Shimmering and Magically Colour Changing Gin - Amazing Gift for Gin and Cocktail Lovers : Amazon.co.uk: Grocery
This gin changes colour when you add tonic to it
The Artisan Colour Changing Gin Kit | FIREBOX®
10 Magical Empress Gin Cocktails (Plus, How the Viral, Color-Changing Spirit Works in the First Place)