What Can One Liter of Raw Milk Become? Yield and Processing from a Cheesemaker’s Experience

One liter of raw milk can become completely different foods depending on how it is processed.

It can become yogurt or Greek yogurt. When the milk is coagulated and the whey is separated, it can become fresh cheese. Depending on the processing method, it can also be made into cheeses such as Halloumi and mozzarella. When cheese is aged for a longer period, it becomes aged cheese.

But in actual food production, the important question is not simply what can be made from the milk.

Even when the same raw milk is used, each product can have a different yield. The moisture content, texture, elasticity, and melting properties can also change.

For about seven years, I worked with raw milk and made various dairy products and cheeses myself.

During that time, I made Gouda, mozzarella, Halloumi, yogurt, and Greek yogurt.

Looking back, the most difficult part was not learning the manufacturing procedures themselves.

I learned what I was supposed to do, but I did not understand well enough why I had to do it.

In this article, I will share what I experienced while processing one liter of raw milk, including the approximate yields of different products. I will also explain what I think a beginner should understand before starting food production.

What Is the Difference Between Raw Milk and Milk?

The first thing to understand is the difference between raw milk and milk.

The milk I used for production was not commercially packaged milk purchased from a supermarket. It was raw milk supplied by a farm.

Raw milk is used as a raw material for dairy processing, and it must be properly managed for hygiene and food safety before it can be used as a food ingredient.

The milk we buy at supermarkets, on the other hand, has already been processed and managed as a food product.

Therefore, the one liter of raw milk discussed in this article should not be understood as exactly the same thing as one liter of commercially sold milk.

The production process I experienced can be described simply as:

Raw milk → processing → different dairy products

Understanding this difference is important when considering how much product can actually be obtained from one liter of raw milk.

What Can One Liter of Raw Milk Become?

Raw milk can be transformed into many different foods depending on how it is processed.

When it is fermented, it can become fermented milk such as yogurt.

When more moisture is removed, it can become Greek yogurt with a thicker consistency.

When the milk proteins are coagulated and the whey is separated, cheese can be made.

Cheese can then be processed further through heating, whey removal, pressing, salting, and aging to create different types of cheese.

The Basic Process of Making Cheese from Raw Milk

Raw milk

→ coagulation

→ separation of curds and whey

→ whey drainage

→ shaping and pressing

→ salting

→ aging

Curds are the solid portion formed when milk coagulates, while whey is the liquid separated from the curds.

Therefore, cheese making is not simply a process of concentrating milk.

It is a process of separating the components of milk into different forms and then controlling the moisture and structure of the remaining curds to create a new food product.

The Yield I Experienced from One Liter of Raw Milk

The yield varied considerably depending on the product.

The following figures are not standard yields. They are approximate figures based on my own experience during production.

Product	Approximate yield from 1 liter
Yogurt	about 95%
Greek yogurt	about 25–30%
Fresh cheese	about 28–35%
Halloumi	about 35–40%
Aged cheese	about 100 g

In some cases, I obtained about 100 g of finished aged cheese from one liter of raw milk.

By simple calculation, that is approximately 10%.

However, these numbers should not be applied to every type of raw milk or every type of cheese.

The final yield can change depending on the composition and condition of the milk, the type of cheese, the target moisture level, coagulation conditions, whey drainage, pressing, salting, and aging conditions.

Therefore, when discussing cheese yield, it is more important to consider not just one number, but also the raw material and processing conditions that produced that yield.

Why Do Yield and Physical Properties Change?

To understand how one liter of raw milk can become completely different products, it helps to think about how moisture and other milk components move during processing.

In yogurt, many of the components of the milk remain in the finished product.

When making cheese, however, the milk proteins are coagulated and the whey is separated.

Whey contains water as well as lactose, some proteins, and minerals.

This means that when cheese is made, not all of the components of the raw milk remain in the cheese.

Yield and Physical Properties Are Not the Same Thing

Yield refers to how much finished product is obtained.

Physical properties refer to the condition and characteristics of the product.

Whether a cheese is firm or soft, elastic, stretchy, or easy to melt are all related to its physical properties.

In cheese making, coagulation, cutting the curd, heating, whey drainage, pressing, salting, and aging are connected to one another and can affect the final product.

For this reason, a cheesemaker cannot evaluate the process simply by checking the final weight of the cheese.

It is also necessary to check whether the expected moisture level and texture have been achieved.

A Failure I Experienced When Making Gouda

There is one failure that I remember clearly from my experience making cheese.

During the production of Gouda, I reached the heating stage, but the whey did not drain properly.

As a result, the curds were in a different condition from what I expected, and I could not carry out the pressing stage properly.

In the end, I was unable to finish the product as the Gouda I had originally planned to make.

At the time, I thought that one step in the manufacturing process had simply gone wrong.

Looking back now, I understand that the problem in one stage affected the stages that followed.

The individual steps of cheese making are not separate from one another.

The condition of the curds created in one stage affects the results of the next stage.

That is why a cheesemaker needs to understand what is changing at each stage rather than simply memorizing the order of the procedures.

Is Learning a Manufacturing Method Enough?

Based on my own experience, learning a manufacturing method is only the beginning.

I also received training before I started making dairy products.

However, at that time, I did not fully understand what I did not know.

In actual production, many factors need to be observed, including the condition of the raw milk, temperature, time, acidity, coagulation, curd moisture, whey drainage, pressing, salting, and aging.

Sometimes the moisture level was higher than expected.

At other times, the elasticity or melting properties of the product were different from what I expected.

I could not always explain exactly why these differences occurred.

Looking back, what I lacked was not simply more hands-on experience.

I needed to study both how to make a product and why each step was necessary.

How to Make Something and Why It Is Made That Way

Official references and manufacturing training are essential.

However, applying that information to actual raw materials and processing conditions also requires an understanding of what changes in the production environment.

This does not mean that official manufacturing information is incorrect.

The problem was that I did not understand well enough what the conditions described in those materials actually meant when applied to real production.

What Should a Beginner Study Before Starting Food Production?

If I were starting again from the beginning, I would study the following subjects before trying to memorize manufacturing procedures.

Understand the Basic Components of Raw Milk

It is important to understand the basic composition of raw milk, including fat, protein, and water.

One liter of raw milk does not necessarily have exactly the same characteristics every time.

Understand the Relationship Between Fermentation and Acidity

Microorganisms and changes in acidity are important in yogurt and cheese production.

Rather than simply memorizing what to add and how long to wait, it is important to understand what is changing during the process.

Understand Curds and Whey

During cheese making, raw milk coagulates and separates into curds and whey.

The curds become the main part of the cheese, while the whey is separated as a liquid.

Understanding how whey is removed is an important part of cheese making.

Understand Moisture and Physical Properties

The moisture of cheese is not simply a matter of how much water it contains.

Moisture conditions are connected to texture, storage, and the aging process.

Therefore, whey drainage and pressing should not be regarded as simple mechanical steps.

Record Temperature and Time

Instead of relying on an approximate feeling such as "about this temperature" or "about this long," record the actual temperature and time.

This makes it possible to compare one production batch with another when the final product changes.

Record Failed Products as Well

A failed product should not simply be thrown away and forgotten.

It should be recorded and examined to understand why it failed.

A record of failure can become valuable information for the next production batch.

How Does the Value of Raw Milk Change?

Processing raw milk does not simply change its price.

When liquid raw milk is transformed into foods such as yogurt or cheese, its form, storage characteristics, and ways of consumption and use also change.

Cheese production also shows why whey should not automatically be viewed only as a waste product.

Whey contains lactose, some proteins, and minerals.

Therefore, when processing raw milk, it is worth considering not only the final product but also the by-products separated during the manufacturing process.

In the end, the value of one liter of raw milk cannot be judged by the final weight of the finished product alone.

We also need to consider how its components are separated, what kind of food is produced, and how that food can be stored and used.

What One Liter of Raw Milk Taught Me

When I first started food production, I thought that learning how to make a product was the most important thing.

But after experiencing actual production, my thinking changed.

"Why is this temperature used?"

"Why is this amount of time necessary?"

"Why is the whey removed?"

"What happens if the whey is not removed properly?"

"How does a change in moisture affect the physical properties of cheese?"

Understanding questions like these is just as important as memorizing the manufacturing procedure.

One liter of raw milk can become many different foods.

But this transformation is not simply a matter of processing.

Depending on the condition of the raw material and the processing conditions, the yield, moisture, texture, and physical properties can all change.

I experienced these differences firsthand during actual production.

That is why, if you are just starting to learn food production, I would suggest studying what changes in the raw material and during each processing step before trying to make products by simply following a recipe.

Learning how to make something is the beginning.

Understanding why it is made that way is the next step.

I hope that the mistakes and lessons I experienced can serve as a small reference for someone else and help them avoid making the same mistakes.