THE OUTCOMES
pH
The Hidden Balance of Wine
pH is one of the most important numbers in winemaking but you can't taste it directly. While acidity tells you how much acid is in the wine, pH tells you how strong that acidity is. It influences how bright a wine tastes, how well it ages, how stable it is, and even its colour.
Acidity vs pH
Although related, they are not the same thing.
Acidity
The amount of natural acids in the wine.
pH
The strength, or effectiveness, of those acids.
Two wines can have the same acidity but different pH levels, which is why they can taste surprisingly different.
Why does pH matter?
A wine's pH affects far more than taste.
Freshness and brightness
Colour stability
Microbial stability
Oxidation resistance
Ageing potential
Overall balance
Lower pH wines feel brighter, fresher and more focused.
Higher pH wines feel softer, rounder and more generous.
Neither is inherently better. The ideal pH depends on the grape variety, wine style and the winemaker's intention.
What affects pH?
Like acidity, pH begins in the vineyard, but careful winemaking can make small adjustments where needed.
Many factors influence a wine's pH, including:
Climate
Soil composition
Grape variety
Ripeness at harvest
Potassium levels in the vineyard
Winemaking decisions
pH Scale
Low pH
The wine feels energetic, crisp and vibrant. Colours are often more stable, and the wine generally has excellent ageing potential.
Balanced pH
The acidity and fruit work together seamlessly, creating a wine that feels balanced and expressive without either element dominating.
Higher pH
The wine feels broader and richer on the palate. If well managed, this can create luxurious texture. If too high, however, the wine can lose freshness and become less stable over time.
pH in Aurenloch
Think of acidity as the amount of fuel in the tank. Think of pH as how efficiently that fuel powers the engine. Together they shape the freshness, longevity and personality of every wine.
You may never see pH on a bottle, but it quietly influences almost everything inside it. It is one of the invisible forces behind every great wine.