The Bombay sandwich is a sandwich made of white bread covered in butter and chutney with a filling of potatoes and raw vegetables, often as a toasted sandwich. It may be toasted over a flame or using an electric toaster. Its ingredients may include cucumbers, onions, beetroot, and chaat masala, and it may be topped with cheese or sev. Many variations of ingredients exist. The origin of the Bombay sandwich is uncertain, but it may have been invented by migrant textile workers in the 1960s. The sandwich is popular as street food across Mumbai, but it is not as popular elsewhere.