Why Is Gouda Cheese Pressed?｜What Happens When Curd Becomes Cheese

In cheese making, the most physically demanding stage is placing the curds into molds and pressing them.

This process requires not only physical strength, but also strict time management from raw milk preparation to the final steps.

I invested 100 million KRW (approx. $75,000 USD) in commercial cheese-making equipment. However, a short 10-day training course was not enough to handle the various real-world variables in the workshop.

Due to a lack of deep theoretical experience, I faced many trial-and-error moments and reached clear limits in price competition with mass-production factories.

This article shares my honest experience regarding why Gouda cheese pressing is necessary and the key precautions from a producer's perspective.

1. Curd Formation and Whey Separation: The Start of Waiting and Hard Labor

Timing is critical in cheese production.

Heating the milk and adding cultures and rennet to form curds requires patience. If temperature and timing are not exact, the entire batch of milk can be ruined.

• The Exhausting Task of Curd Stirring

  You must continuously stir the curds inside the vat at a constant speed to prevent them from clumping together too early. Stirring a large vat daily causes significant physical strain on your arms and shoulders.

• The Strain of Whey Separation

  Once the curds reach the target acidity and texture, draining a massive amount of liquid whey and filtering the curds requires substantial physical labor.

• Unplanned Interruptions and Timing Errors

  When working alone or with a small team, unexpected phone calls from local government offices or customers often interrupt the process. Leaving the workspace even briefly to answer a call can cause you to miss the critical timing window. Delaying the process alters the acidity and texture of the curds, directly affecting the final cheese quality.

2. Why Pressing Is Essential in Cheese Making

The curds collected after separation contain a high amount of moisture, similar to soft tofu.

Applying mechanical pressure using pressing equipment is necessary for the following reasons:

• Removing Residual Whey and Controlling Moisture

  Pressing squeezes out remaining whey from between the curd particles to improve shelf life. Proper moisture control prevents harmful bacteria from growing during the aging process.

• Curd Matting (Fusing the Particles)

  Pressure fuses loose curd particles into a solid, uniform block of cheese.

• Rind Formation

  Pressing creates a smooth, firm outer layer (rind), which helps maintain consistent internal moisture levels during aging.

3. The Actual Pressing Process: Turning Curd into Cheese

(Insert your Gouda cheese press image here)

The equipment shown in the photo is a multi-tier hydraulic and pneumatic press used for Gouda cheese.

The curds are placed in plastic molds with cheesecloth, stacked in layers, and subjected to controlled pressure.

1. Initial Low Pressure

   Applying strong pressure right away hardens the outer surface too quickly, trapping moisture inside. In the beginning, low pressure is applied to allow whey to drain naturally.

2. Flipping and Cloth Dressing

   Pressing is not a one-time step. You must regularly remove the cheese from the molds, flip it over, smooth out wrinkles in the cheesecloth, and re-press it. This ensures an even shape and uniform whey drainage.

3. Final High Pressure

   Pressure is gradually increased to form the firm structure characteristic of Gouda cheese.

4. Practical Precautions and Lessons Learned as a Producer

Textbooks often summarize the process simply as "press at X pressure for Y hours." However, actual production is full of unexpected variables.

• Batch Losses Due to Timing Errors

  Missing the pressing timing or failing to adjust pressure correctly can result in cheese that is hard on the outside but soft and wet inside. Such batches must be discarded entirely.

• Physical Fatigue

  Filled cheese molds and wet curds are heavy. Repeatedly lifting, transferring, and flipping dozens of molds requires intense physical labor.

• Temperature and Humidity Control

  If the temperature and humidity in the room are not properly managed during pressing, acidity increases rapidly, making the cheese crumbly and weak.

Artisanal cheese making is a combination of precise timing and heavy manual labor.

Small-batch craft producers face tough competition against industrial factories because of the immense effort required at every stage.

However, seeing a smooth, beautifully formed block of Gouda come out of the mold makes all the hard work worthwhile.

myblog.com/gouda-cheese-pressing-en(https://myblog.com/gouda-cheese-pressing-en