Shaped into little pine trees and filled into a traditional tartan-clad box, Walkers' Mini Shortbread Christmas Trees are a festive delight. Created in the Scottish Highlands; loved the world over. Following a traditional family recipe devised by Joseph Walker, Walkers have been making pure butter shortbread in the Moray village of Aberlour since 1898. To this day, they still use no artificial colours, flavourings or preservatives.