What derogatory name for the British has its origins in sailors eating something to avoid scurvy?
Glossary of names for the British used extensively in the British Raj and is still used extensively in the Indian Subcontinent. The term is thought to have originated in the 1850s as "lime-juicer", and was later shortened to "limey". It was originally used as a derogatory word for sailors in the Royal Navy, because of the Royal Navy's practice since the beginning of the 19th century of adding lemon juice or lime juice to the sailors' daily ration of watered-down rum (known as grog), in order to prevent scurvy. Eventually the term lost its naval connection and was used about British people in general. In the
Scurvy belief that scurvy was fundamentally a nutritional deficiency, best treated by consumption of fresh food, particularly fresh citrus or fresh meat, was not universal in the 19th and early 20th centuries, and thus sailors and explorers continued to suffer from scurvy into the 20th century. For example, the Belgian Antarctic Expedition of 1897–1899 became seriously affected by scurvy when its leader, Adrien de Gerlache, initially discouraged his men from eating penguin and seal meat. In the Royal Navy's Arctic expeditions in the 19th century it was widely believed that scurvy was prevented by good hygiene on board ship, regular exercise,