THE MAGIC OF AGING: HOW THE UNIQUE FLAVOR OF CHEESE IS BORN
At the end of summer, the spring cheese, made from the milk of the best pastures, begins to develop an intriguing aromatic profile.
It is at this stage that its true potential starts to reveal itself. But what does it really mean to age a cheese?
Aging as Natural Fermentation
Aging is, in every respect, a process of natural fermentation. At the beginning, lactic bacteria set the transformation in motion. In raw milk, in fact, many species of microorganisms live and work, with names that sound as if they belong in a fantasy novel: streptococcus thermophilus, lactobacillus paracasei, lactobacillus delbrueckii, bacillus subtilis, enterobacter hormaechei, hafnia paralvei.
In reality, they are all part of the rich and fascinating world of bacteria naturally present in raw milk—around 400 different species are known. They form a true army of “good” activists, the very same many people purchase as probiotics to support the health of the microbiota.
After curdling and shaping, these microorganisms develop inside the wheel, protected by the rind, which dries thanks to the salt and shields the cheese from unwanted bacteria or molds present in the environment.
Why Good Cheese Cannot Exist Without Microorganisms
It may sound strange without a scientific background, but without natural microorganisms, quality cheese could not exist. In a sterile environment, no aromatic evolution would occur.
To thrive, these invisible allies need specific conditions: temperature, humidity, and air exchange. Depending on these parameters, different families of bacteria come into play, each with a fundamental role in determining the complexity of flavor.
Ideal Temperature and Humidity for Aging
Most cheeses are aged at temperatures between 8 and 12°C (46–54°F), with a humidity level of about 90%.
- Lower temperatures slow down microbiological activity and promote more delicate aromas, while also encouraging the development of noble molds on the rind—essential for the aromatic profile.
- Higher temperatures, instead, accelerate the processes and create bolder, spicier flavors.
- High humidity is essential to prevent excessive dehydration of the wheel and to support mold development.
Air exchange also prevents the accumulation of gases released by the cheese, which could otherwise become harmful for those working in the aging rooms.
What Happens Inside Cheese: Fermentation, Proteolysis, and Lipolysis
From a biochemical perspective, fermentation consumes lactose—the sugar in milk. At the same time, proteolysis (protein breakdown) and lipolysis (fat breakdown) occur.
After about 60 days, lactose is almost completely consumed, and further complex reactions are triggered.
One of the most fascinating results is the formation of the typical crystals in aged cheeses, which enhance both texture and flavor.
The Different Aging Environments
Each environment has a decisive influence on the final result:
- a natural cave (oxygenated environment)
- a cold storage room (controlled, artificial environment)
- a pit (natural environment without oxygen)
These are three completely different conditions, each capable of creating unique aromas and characteristics.
At Podere Il Casale, thanks to our experience, we know that having several rooms with different microclimates would allow even more experimentation, giving rise to bloomy rind, washed rind, or blue cheeses, each with its own unmistakable personality.
