字幕表 動画を再生する 英語字幕をプリント Why is Australian butter so yellow? Australian butter is noticeably yellower than its European counterparts, mainly because of the difference in the diets of dairy cattle. In Australia, cows graze on grass rich in beta-carotene, which gives the butter its yellow hue. In contrast, many European cattle are housed in barns and fed dry food containing lower levels of beta carotene, resulting in less yellow butter. The diet of dairy cows plays a crucial role in the quality of milk and dairy products, as evidenced by Canada's buttergate incident in 2021, where adding palm oil to cattle's diet altered the texture of butter.