USA, 1898—a type of sandwich consisting of a long crusty roll filled with ham, pork, cheese, pickles and mustard, often toasted—originally: any of various types of sandwich associated with Cuban cuisine
UK, 1871—a paper bag, balloon, etc., filled with flour and thrown or dropped such that it bursts and disperses its contents over the target on impact, usually as a prank or as part of a protest or public demonstration
1843—a representation of a human skull or skeleton, originally crafted from sugar and intended to be eaten and often given to children as a gift around Día de Muertos (Day of the Dead)
a cake made with the ingredients available during wartime—first used during the First World War (1914-1918)—came back into usage during the Second World War (1939-1945)
UK, 1883—to stay at a hotel, inn, etc., that provides a bed for the night and breakfast the following morning—to stay at an establishment known as a ‘bed and breakfast’
Australia, 1934—an inexhaustible supply of something, especially money—alludes to The Magic Pudding (1918), by Norman Lindsay, in which a pudding instantly renews itself as it is sliced or eaten into
1975 as ‘French chef’s kiss’—a gesture used to indicate that something is excellent or perfect—also a perfect or excellent person or thing—alludes to such a gesture stereotypically made by a chef on tasting a delectable dish