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This episode was so engaging, here’s a class representative’s casual summary 
Milk and Yogurt Revealed: Stop Spending Extra Just Because of Names
I. Yogurt: What Makes It Expensive?
- Milk Skin Yogurt:
Simply put: it’s traditional yogurt with extra cream added.
What you pay more for: mainly the richer, smoother “cream flavor,” not some special process.
- Dry Choking/Greek Yogurt:
Simply put: it’s “dehydrated” yogurt. The watery part inside (called whey) is filtered out, so it becomes especially thick.
Fun fact: The filtered-out liquid (whey) is not waste; it’s actually good stuff used to make protein powder.
- Pricing secret:
Look at the protein and fat numbers on the packaging. The higher these two numbers, usually the more expensive the yogurt because of better ingredients.
II. Milk: The Noble Story to Take Lightly
- A2 Milk:
Originally: meant for a very small group of people who can’t tolerate regular milk.
Now: marketed as “premium milk” better for everyone, with double the price.
Truth: It’s just about classifying cows and raising different ones. It’s a commercial strategy; don’t believe it has magic effects.
- Goodnight Milk/DHA Milk:
It’s milk from cows fed special feed.
Effect: By the time it’s in your cup, there’s very little left—don’t take it too seriously. If you want better sleep, just go to bed earlier.
- Milk with a Layer of “Milk Skin” (Non-homogenized Milk):
It just means the fat hasn’t been broken up, so cream rises to the top, looking very natural.
Interestingly: This kind of “less processed” milk may actually be more expensive for good reasons due to higher standards.
III. Some Very Practical Tips 
- Buying large tubs of yogurt is cost-effective but be smart:
If it spoils fast: always use a clean! dry! spoon to scoop. Never use a spoon that’s already been used, or the whole tub will quickly get moldy.
Eat it quickly, don’t store for too long.
Where to buy: For those heavy, large tubs, highly recommend apps like JD.com’s self-operated stores. Delivered straight to your door, no need to lug bags from the supermarket, and it’s fresher.
- Don’t trust the name, look here!
No matter what it’s called, flip to the back of the package and check the ingredient list.
The better the product, the shorter the ingredient list. Pure yogurt basically only includes “raw milk” and a few kinds of bacteria—it’s very clean. If you see a bunch of chemical names you don’t recognize, you know what’s going on.
- One final truth:
Don’t be fooled by flashy names. Understand that you just want to drink milk, choose according to your budget and real needs, and you’ll have “milk freedom” without wasting money!
There’s no “the more expensive the healthier” for milk and yogurt, only “whether it suits you” 
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