If you opened a free-range supermarket egg in Britain in 2026 and the yolk was a deep marigold orange, you were, in most cases, looking at a piece of marketing.
— Sama Hoole (@SamaHoole) May 9, 2026
Yolk colour comes from carotenoids in the hen's diet. A hen on grass, eating insects and weeds, lays a yolk somewhere… pic.twitter.com/sdBoI12nja
Stark yet “cloaked” realities
https://bmjpublichealth.bmj.com/content/2/1/e000282?utm_source=substack&utm_medium=email