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’
to use a temporary expedient—UK, 1889—origin attributed to Prussian statesman Bismarck in a letter written during the negotiations of the Convention of Gastein (1865)