Do you know what is barista milk?

You know what? Whole milk is not 100%, not 50%, not even 20%. In fact, full-time milk has a fat content of only 3.5%. It is called "whole" because it is purer. As the California Dairy Commission describes whole milk: "Whole milk is unprocessed, freshly expressed milk."

But this sentence is not rigorous, unprocessed is only relatively speaking. Whole milk is indeed more complete than milk with 2% fat, 1% fat and skim, because other varieties of milk are defatted to remove excessive fat content and calories from milk. The FDA doesn't specify the names of milk varieties, so dairy manufacturers have been naming their products as "whole milk." The main reason why coffee is mostly required to add whole milk is not that the fat contained in the milk can produce bubbles in the process of making steam milk bubbles. The main purpose of using whole milk in coffee is to make the coffee more flavor, and the main effect is to increase the flavor. The main component of steam bubbles is protein, so it is necessary to pay attention to protein content and fat content when choosing milk to prepare coffee. In order to make coffee flavor more comprehensive, many foreign and Taiwan fine cafes are using fresh milk to make steam milk foam into coffee.

Whole milk may sound greasy, but it contains less than twice as much fat as milk with 2% fat. It contains only 5 grams of fat per glass, and drinking whole milk produces only 30 calories more per glass than milk with 2% fat. So if dairymen had a conscience, they shouldn't call it whole milk, they should call it 3.5% fat milk. In fact, some retailers don't understand the trick. They usually write "fat-free milk" on all the boxes of skim milk. I say we unify milk labels, changing "2 percent fat" to "semi-skim,""1 percent fat" to "2/3 skim," and "fat-free" to "0 fat."

Because of its unfortunate name, sales of whole milk have plummeted over the past few decades. Americans have a long history of eating away at fat, so sales of whole milk there have been slow. National sales of whole milk totaled 14 billion pounds last year, down 61 percent from 1975. During the same period, sales of milk containing 2% fat almost doubled and sales of milk containing 1% fat tripled.

Indeed, Americans are drinking less milk. But the sharp drop in sales of whole milk has absolutely nothing to do with the name it makes unmisinterpreted.