letter of thanks for hospitality: ‘bread-and-butter letter’ (USA, late 19th century) – ‘Collins’ (UK, early 20th century, from the name of William Collins in Jane Austen’s Pride and Prejudice)
After ready-sliced bread was introduced, improvements in the baking industry were assessed by comparison with it—hence the figurative use of ‘since sliced bread’
first recorded in The Biglow Papers (1848), by American author James Russell Lowell—based on the notion of leaving one’s hat behind in a rush of impetuosity