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usonian

(13,550 posts)
Thu Jul 27, 2023, 10:39 PM Jul 2023

How does ice cream work? A chemist explains why you can't just freeze cream and expect results

So, it's definitely not cooking. There's not even a Joe Biden forum, so here goes with the inside story of ice cream.

https://theconversation.com/how-does-ice-cream-work-a-chemist-explains-why-you-cant-just-freeze-cream-and-expect-results-205038

Ice cream seems like a simple concept. Take some dairy, add some sugar and flavours, and freeze.

But to get a perfectly creamy, smoothly textured frozen treat, we need more than just a low temperature – it takes a careful interplay of chemistry and three states of matter: solid, liquid and gas.

What’s in the box?
Commercial ice cream includes many ingredients: air, water, milk fat, so-called milk solids (mainly milk proteins and lactose), sweeteners, stabilisers, emulsifiers and flavours. The ingredients are mixed and pasteurised for food safety.

Homemade ice creams tend to use milk, heavy cream, sugar and flavourings, such as fruit, berries, or chocolate. The exact quantities vary with the recipe, but the processing steps are similar.


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How does ice cream work? A chemist explains why you can't just freeze cream and expect results (Original Post) usonian Jul 2023 OP
Good info! BigmanPigman Jul 2023 #1
Oh! Chocolate hazelnut is wonderful. usonian Jul 2023 #3
There is a recipe out there using whipping cream and condensed milk Warpy Jul 2023 #2
Simpler. The physics lab manager would make ice cream with Liquid Nitrogen. usonian Jul 2023 #4
Only if you have the proper safety gear, anyway Warpy Jul 2023 #5
He was good at it. Good every time. Just not often. usonian Jul 2023 #6
I get my ice cream at Publix. Dove dark chocolate ice cream bars Deuxcents Jul 2023 #7
Don't worry. Be happy. usonian Jul 2023 #8

BigmanPigman

(52,211 posts)
1. Good info!
Thu Jul 27, 2023, 11:03 PM
Jul 2023

People confuse gelato and ice cream when in fact they have a different process...

https://www.thepioneerwoman.com/food-cooking/a36165600/gelato-vs-ice-cream/

When I went to school in Rome I never had gelato before (1983) and fell in love with it (chocolate hazelnut...yum!). I was even happier to learn it has fewer calories than ice cream does.

usonian

(13,550 posts)
3. Oh! Chocolate hazelnut is wonderful.
Thu Jul 27, 2023, 11:13 PM
Jul 2023

Other one that amazed me was chocolate orange made by Bravo Fono. Intense stuff. I visited them when they were in the Stanford Mall, but they moved and I moved. Probably still in San Francisco.

Closest was chocolate orange by Three Twins, which went out of business during covid.

Things change.

Warpy

(113,130 posts)
2. There is a recipe out there using whipping cream and condensed milk
Thu Jul 27, 2023, 11:05 PM
Jul 2023

and while it does tend to be a bit grainy without the constant mixing and slow freezing real ice cream gets, apparently it is acceptable.

Dairy is not my friend, so I'll have to take their word for it.



usonian

(13,550 posts)
4. Simpler. The physics lab manager would make ice cream with Liquid Nitrogen.
Thu Jul 27, 2023, 11:15 PM
Jul 2023

Not in your average kitchen.

Warpy

(113,130 posts)
5. Only if you have the proper safety gear, anyway
Thu Jul 27, 2023, 11:22 PM
Jul 2023

I think the freezing process needs to be slowed, not sped up. Liquid nitrogen would result in huge crystals.

usonian

(13,550 posts)
6. He was good at it. Good every time. Just not often.
Thu Jul 27, 2023, 11:41 PM
Jul 2023

I don’t recall more than a lab coat, safety glasses and sturdy gloves.

But it was a long time ago. Guy knew his business.

Deuxcents

(19,548 posts)
7. I get my ice cream at Publix. Dove dark chocolate ice cream bars
Fri Jul 28, 2023, 12:32 AM
Jul 2023

I’m pretty much hooked on them and have to watch it as I could eat more than one! Yummy. I don’t know how they’re made but as long as they keep ‘em stocked, I’m happy 😃

usonian

(13,550 posts)
8. Don't worry. Be happy.
Fri Jul 28, 2023, 12:41 AM
Jul 2023

Love almost anything chocolate. Currently pretty mad for Trader Joe's coffee blast. It's extra flavorful for non specialty ice cream. Or is that burst?

Those $60-$90 ice cream makers are real cheap at the thrift stores. So are the kids-off electric jar openers. Mister muscle here has narrow wrists and not taking any risks. Macho be damned.

But I cook for one, so I rarely make anything that I can buy. Homemade sizes are even larger than store bought sizes and stuff spoils ( unless it's ice cream, of course)

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