A mash and pie with liquor parsley is a very common meal in London. Before, an original pie was made out of eels, since they were cheaper than beef products. Fifty years have passed, the eels were replaced with minced beef fillings. Since then, the minced beef became the traditional mash and pie that the Britons are proud of. Of course, the traditional mash and pie is not complete without its all-time favorite sauce called liquor, whicht has a funny green shade, and its surely non-alcoholic.