ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins65% CONFIDENCEOverall confidence: 65%How well the pin's source and references back up its dates.Weighted average of how firmly 2 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins from 50% to 74% confidence
Wikipedia[1] gives the year only - "said to have been founded in 1725" - and hedges it as tradition rather than record, so the pin takes that year's last day and the confidence stays estimated.Botín has been serving on Calle de Cuchilleros since 1725, which the Guinness Book of Records recognises as making it the oldest restaurant in the world still trading. It was founded by the French cook Jean Botín and his Asturian wife, passed to a nephew - the sobrino of the name - and still roasts suckling pig in the same wood-fired oven, which has reportedly not been allowed to go out.
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