A useful distinction
A food-history note can draw on a menu, an oral account and a museum explanation. Each provides a different kind of evidence. A source list makes those distinctions available to the reader instead of hiding them behind a broad claim of tradition.
Put it into practice
Write a short entry with author or institution, title, date and direct link. Mark what each source actually supports. Keep an uncertain attribution visible and avoid copying a long interview or exhibition text into your own article. Original interpretation should remain identifiable as interpretation.