After the entries were narrowed down and the finalists selected, food technologists set about creating the flavours in the laboratory, using a mixture of natural ingredients and unspecified "flavouring", which Walkers' head of flavour development, James Stilman, said were "natural flavour compounds" and not e-numbers.
Full English breakfast is made up of salt, pepper, sage, barley malt extract, butter, citric acid, dried garlic and flavouring, while the ingredients for Cajun squirrel include milk, lactose, salt, sugar, dried onion, dried garlic, dried lemon juice, cardamon, ginger, coriander, chilli, cumin, oregano, thyme, allspice, parsley, paprika extract and flavouring.