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random42_ · 3 years ago
Curiously egg whites are also used to remove particles from stock (chicken, veal, beef) when you want to have a crystal clear liquid.
akashshah87 · 3 years ago
AStrangeMorrow · 3 years ago
Yes, that's also where the french dessert canelé comes from: the egg whites being used for wine filtering, you have a lot of yolks left. So instead of wasting them, they were/are used to make canelés.
glial · 3 years ago
And Swedish egg coffee.
Wistar · 3 years ago
Consomme technique.
Larrikin · 3 years ago
I found this a very interesting technique when you posted it, but I actually wonder now if there is much point to it. Most of the gunk is filtered out when making a stock when you pass it through a sieve and/or a cheese cloth.

OfIs a clear broth actually something that matters besides a gate keeping technique in French cuisine?

random42_ · 3 years ago
As already mentioned in this thread, this is done mostly for aesthetic purposes, like when making a consommé - which is judged also by how clear the liquid is, besides flavor. Other than that, you shouldn’t bother if you’re using the stock to make other dishes.
hansvm · 3 years ago
If you aren't careful with how you make your stock (e.g., including the scales and whatnot in a fish stock and cooking on higher heat levels), the egg whites will pull out some off flavors. Otherwise it's mostly aesthetics.
causi · 3 years ago
Maybe you have specific aesthetic goals.
wirrbel · 3 years ago
First thought I had : grandma used to clarify broth with eggs.

Iirc you can also use it to prepare coffee when camping. The egg binds to ground coffee in a saucepan so it’s better separated from the coffee you pour into your mug

mcv · 3 years ago
The title just mentions microplastics, but the first line of the article says:

> a way to turn your breakfast food into a new material that can cheaply remove salt and microplastics from seawater.

So salt too? Isn't that way more impressive than microplastics? Could this lead to cheap desalination?

kul_ · 3 years ago
But then, how will you separate salt from microplastics?
therein · 3 years ago
Heat them up to their very distant melting points.
moneytide1 · 3 years ago
> "I was sitting there, staring at the bread in my sandwich," said Arnold. "And I thought to myself, this is exactly the kind of structure that we need."

Reminds me of Eli Whitney seeing a cat defeather a chicken while trying to pull it through a fence, inspiring the cotton gin (learn from nature). Wasn't the original Starlite also derived from edible matter [0]?

They started with the bread because of its spongey texture (fine, compacted flour expanding as yeast yields gas) but arrived at the egg white protein structure which is less apparent to the naked eye (the light color implies low density solid? Polar bears appear white but hair is clear, which means more empty space thus insulated?).

> Egg whites are a complex system of almost pure protein that—when freeze-dried and heated to 900 degrees Celsius in an environment without oxygen—create a structure of interconnected strands of carbon fibers and sheets of graphene.

I wonder if this rapid temperature change is embrittling the structure (squeeze with cold then stretch with heat) causing it to fragment into the "two dimensional" graphene sheets after being depleted of everything but the carbon. But the carbon fiber protein strands are cylindrical - how is this leading to flat one-atom thick sheets? Perhaps this rapid temperature gain to a specific 900C is akin to the specific resonant frequency that will shatter the crystalline structure of glass.

Robert-Murray Smith has experimented with graphitizing various natural materials like banana peels, seaweed, wood, and coffee grounds [1].

[0] https://youtu.be/0IbWampaEcM?t=256

[1] https://youtu.be/a3_XU-nva5o?t=121

bell-cot · 3 years ago
Here's a slightly-critical bit...if you wanted to do this at massive scale, without inducing massive starvation:

> "Eggs are cool because we can all connect to them and they are easy to get, but you want to be careful about competing against the food cycle," said Arnold. Because other proteins also worked, the material can potentially be produced in large quantities relatively cheaply and without impacting the food supply. One next step for the researchers, Ozden noted, is refining the fabrication process so it can be used in water purification on a larger scale.

MisterBastahrd · 3 years ago
Egg whites have only been used for centuries in French cuisine as a method for clarifying liquids.
somenewaccount1 · 3 years ago
+ Aerogel. That will be $1 million dollars now please. Thank you.
d--b · 3 years ago
The stuff seems great but one has to ask: what kind of bread is that guy eating that has egg whites in it?!
erulabs · 3 years ago
White bread is often made with egg whites to give it that super dense but fluffy/spongy texture it's famous for.
herbst · 3 years ago
Often is a bit of an overstatement. Here in central Europe (where people think is the centre of bread culture) there is no egg and also no added sugars in 99% of all common and traditional breads.
bitxbitxbitcoin · 3 years ago
Egg whites can be unboiled, too.
agumonkey · 3 years ago
a new chemical storage for energy
electric_mayhem · 3 years ago
How about ground flax seeds? Or aquafaba?

They work in other contexts as egg substitutes…

adamjc · 3 years ago
FTA, it's a protein found in egg whites:

> Because other proteins also worked, the material can potentially be produced in large quantities relatively cheaply and without impacting the food supply.

likpok · 3 years ago
There are vegan flocculants -- guinness switched a while back, making their beer vegan.
iancmceachern · 3 years ago
Or that goo that surrounds chia seeds when soaked