Ketchup can be added to a bacon sandwich which can also be known as a bacon butty, bacon sarnie, rasher sandwich, bacon sanger, piece 'n bacon, bacon cob, bacon barm, or bacon muffin.
[['Bacon sandwich', 'INGREDIENT', 'Ketchup'], ['Bacon sandwich', 'ALTERNATIVE_NAME', '"Bacon butty, bacon sarnie, rasher sandwich, bacon sanger, piece \'n bacon, bacon cob, bacon barm, bacon muffin"']]