Live data from Hacker News

Why are some egg yolks so orange?

foodunfolded.com

61–70 of 267 posts

Re: Why are some egg yolks so orange?

#61
Color is very important for food. My favorite story is the one [1] with wine tasting, where the same white wine was tasted twice by the same people, in one case with tasteless red color added. The taste was reported to be completely different. While it might be contributed to wine tasting being total BS, my favorite part of this study was that its author became a wine maker :-).

[1] https://www.realclearscience.com/blog/2014/08/the_most_infam...

Re: Why are some egg yolks so orange?

#62

Not too long ago in China, consumers preferred duck eggs with red tinted yolks. Market vendors would crack off the top half of an egg and display its yolk, and consumers thought the redder the better. So, of course, farmers started feeding a carcinogenic dye called Sudan Red directly to the ducks. * http://www.china.org.cn/english/health/189567.htm

Chinese markets strike me as absolutely brutal. I mean, there is always some theft, fraud etc. in any market (one of the oldest written records of humanity is a customer complaint about bad copper sold by a certain Mesopotamian merchant called Ea-nasir in 1750 BC), but stuff like poisoning your customers with Sudan Red, or adding melamine to yoghurt, or frying food on gutter oil seems to always be reported from China…

I guess it was quite a long time ago now but https://en.wikipedia.org/wiki/1985_diethylene_glycol_wine_sc...

Re: Why are some egg yolks so orange?

#63

I'm a sucker for premium orange yolk eggs. My partner is sucker for buying eggs from a guy who grows them in his backyard. Sometimes, especially when making creamy scrambled eggs I can almost taste fishy or shellfish flavour (not something I like). We are based in NZ and I've heard people use sea shells as a source of calcium for hens, but I find hard to believe that it could be it.

Why would you be surprised? Why throw out scrap fish and seafood when you could sell it as chicken feed?

Re: Why are some egg yolks so orange?

#64
post #17

J. Kenji López-Alt has a bit in his Food Lab book where he explores the effect of yolk colour on taste. Paraphrasing, the takeaway is that people generally perceive redder/deeper yolks as more flavoursome, but if you remove this factor (with food colouring, say), then people can't tell the difference. He summarises this in a twitter thread: [1] [1]: https://nitter.net/kenjilopezalt/status/1176542696724320256

For people into this kind of stuff check out “Taste: What You’re Missing” from food scientist Barb Stucky.

It’s a pop science collection of stores about measuring tastes and food pleasure. I remember reading a chapter on texture and how one of the founders of Ben and Jerry’s ice cram, Ben Chohen, doesn’t have a sense of taste. When you can’t taste anything food, ice cream in particular, becomes very boring after the first couple bites. So the sense of pleasure comes from different textures rather than different flavors. That’s why B&J’s ice cream has so many chunky ingredients.

http://barbstuckey.com/the-shop/

Re: Why are some egg yolks so orange?

#65

Not too long ago in China, consumers preferred duck eggs with red tinted yolks. Market vendors would crack off the top half of an egg and display its yolk, and consumers thought the redder the better. So, of course, farmers started feeding a carcinogenic dye called Sudan Red directly to the ducks. * http://www.china.org.cn/english/health/189567.htm

Chinese markets strike me as absolutely brutal. I mean, there is always some theft, fraud etc. in any market (one of the oldest written records of humanity is a customer complaint about bad copper sold by a certain Mesopotamian merchant called Ea-nasir in 1750 BC), but stuff like poisoning your customers with Sudan Red, or adding melamine to yoghurt, or frying food on gutter oil seems to always be reported from China…

Not just Chinese markets, but Chinese products today, such as the cat food and melamine issue, and baby formula. Consumable Chinese products should have a warning label

Re: Why are some egg yolks so orange?

#66

Not too long ago in China, consumers preferred duck eggs with red tinted yolks. Market vendors would crack off the top half of an egg and display its yolk, and consumers thought the redder the better. So, of course, farmers started feeding a carcinogenic dye called Sudan Red directly to the ducks. * http://www.china.org.cn/english/health/189567.htm

Chinese markets strike me as absolutely brutal. I mean, there is always some theft, fraud etc. in any market (one of the oldest written records of humanity is a customer complaint about bad copper sold by a certain Mesopotamian merchant called Ea-nasir in 1750 BC), but stuff like poisoning your customers with Sudan Red, or adding melamine to yoghurt, or frying food on gutter oil seems to always be reported from China…

This used to be common in parts of Europe as well. There is a book called From Poison Sweets to Counterfeit Coffee—The Dark History of the Food Cheats, from the food journalist Bee Wilson [1], which tells (among many other things) a lot of stories about arsenic poisonings in 19th century London, caused by the usage of certain red dyes in food. The saying that certain regulations are written in blood comes from these kinds of stories.

[1]: https://www.goodreads.com/book/show/2507738.Swindled

Re: Why are some egg yolks so orange?

#67

Not too long ago in China, consumers preferred duck eggs with red tinted yolks. Market vendors would crack off the top half of an egg and display its yolk, and consumers thought the redder the better. So, of course, farmers started feeding a carcinogenic dye called Sudan Red directly to the ducks. * http://www.china.org.cn/english/health/189567.htm

Chinese markets strike me as absolutely brutal. I mean, there is always some theft, fraud etc. in any market (one of the oldest written records of humanity is a customer complaint about bad copper sold by a certain Mesopotamian merchant called Ea-nasir in 1750 BC), but stuff like poisoning your customers with Sudan Red, or adding melamine to yoghurt, or frying food on gutter oil seems to always be reported from China…

A lot of this was common in the US and Europe a hundred years ago, but laws and changing culture have stopped it. Just look at snake oil, or the many other “remedies”. See, eg, “ Down and Out in Paris and London” by Orwell, where among many other things he talks about how the restaurant kitchens in early 1900s Paris were extremely gross and dangerous, but because the front of the restaurants were clean, the customers seemed happy.

“A customer orders, for example, a piece of toast. Somebody, pressed with work in a cellar deep underground, has to prepare it. How can he stop and say to himself, 'This toast is to be eaten—I must make it eatable'? All he knows is that it must look right and must be ready in three minutes. Some large drops of sweat fall from his forehead on to the toast. Why should he worry? Presently the toast falls among the filthy sawdust on the floor. Why trouble to make a new piece? It is much quicker to wipe the sawdust off. On the way upstairs the toast falls again, butter side down. Another wipe is all it needs. And so with everything.”

China is at an interesting point because they’ve developed economically so much in the last fifty years. Their culture and law enforcement hasn’t caught up yet while the internet has, so this is shared with us.

Re: Why are some egg yolks so orange?

#68
I generally could care less about the color of an egg yolk but there’s one exception: the egg in ramen. It’s not that it tastes particularly better, marinating anything in soy sauce for a couple days will make it taste delicious. It’s often said we eat first with our eyes. I enjoy the contrast of colors. The dark red/orange looks much more appealing than a pale yellow yolk floating in a bowl of soup.

Re: Why are some egg yolks so orange?

#69

Not too long ago in China, consumers preferred duck eggs with red tinted yolks. Market vendors would crack off the top half of an egg and display its yolk, and consumers thought the redder the better. So, of course, farmers started feeding a carcinogenic dye called Sudan Red directly to the ducks. * http://www.china.org.cn/english/health/189567.htm

Chinese markets strike me as absolutely brutal. I mean, there is always some theft, fraud etc. in any market (one of the oldest written records of humanity is a customer complaint about bad copper sold by a certain Mesopotamian merchant called Ea-nasir in 1750 BC), but stuff like poisoning your customers with Sudan Red, or adding melamine to yoghurt, or frying food on gutter oil seems to always be reported from China…

[deleted]

Re: Why are some egg yolks so orange?

#70

I don't know. I raise chickens. The only difference I've been able to determine between darker and lighter yolks are the age of the eggs. Same food for all the birds. If we don't go through the eggs fast enough, they go from orange to yellow. I'm not saying you can't fake it with additives, but the post must be missing something.

This is totally correct in my experience also raising chickens. Although, the old eggs from our chickens never got to be as colorless as the store bought.
Post reply on HN