Unveiling MCC: The Craft Behind South Africa’s Sparkling Wine

Have you ever experienced an excellent MCC? You know the fine bubbles, freshness, and unique elegance it brings. Terms like second fermentation, disgorgement, and dosage may be familiar, encountered in wine books or explained by winemakers.

But how does this process actually look in reality?

That’s something we wanted to experience firsthand. Hence, we visited someone working in one of the most intriguing technical stages of MCC production. Suddenly, it felt reminiscent of childhood shows—but this time with sparkling wine instead of tools.

What is MCC?

Méthode Cap Classique is South Africa’s answer to Champagne, crafted using the traditional bottle fermentation method.

The main difference from regular wine: the MCC undergoes a second fermentation right in the bottle.

This is precisely where the fine carbon dioxide that creates the elegant bubbles is produced.

This method originated in France; one of the first known Champagne houses, Ruinart, started in 1729. However, today, South African MCCs no longer need to hide behind their French models in terms of quality.

Why Add Sugar and Yeast?

After the initial wine fermentation, a mixture of sugar and yeast is added to the base wine.

The yeast converts the sugar into alcohol—this process generates carbon dioxide.

Since the bottle is sealed, the carbon dioxide cannot escape and remains trapped in the wine, leading to fine, natural bubbles.

Why Are Grapes Harvested Earlier?

For a premium MCC, fresh acidity is key.

That’s why the grapes are harvested significantly earlier than for classic still wines. The lively acidity ensures that the MCC tastes fresh, elegant, and exciting—rather than heavy or broad.

Carbon Dioxide Forms Naturally

Many assume that sparkling wine involves added carbon dioxide.

With the MCC, this is not the case: carbon dioxide is formed entirely naturally through the second fermentation in the bottle.

After this, one of the most technically fascinating parts of the entire process begins.

From Cloudy Wine to Clarity

After at least a year of bottle aging, the wine returns to production.

In the past, everything was done manually—using riddling racks, where bottles needed to be gently turned and tilted over weeks.

Today, this process is mostly managed by specialized machines.

What Happens During This?

• Bottles are slowly shaken
• Repeatedly turned
• Gradually inverted
• Let rest in between for sediment to gather

The goal: All sediment slowly moves into the neck of the bottle, while the wine itself becomes clear.

What may seem simple from the outside is, in reality, precise work down to the millimeter.

Disgorgement: The Most Exciting Moment of MCC Production

Now, it becomes truly spectacular.

The neck of the bottle is dipped into a glycol bath at about -20 °C, freezing the yeast sediment into a small ice plug.

And then everything happens in a matter of seconds:

• The cap is removed
• The frozen yeast plug shoots out
• Only minimal wine is lost
• Next, the dosage is added
• Finally, the bottle is filled to the exact level

What is the Dosage?

The dosage is a mixture of wine, sugar, and a touch of sulfur.

This is where the winemaker's personal touch often lies.

Each producer has their own recipe—sometimes tightly guarded, sometimes perfected over decades. This influences whether an MCC tastes dry, soft, or complex.

Why Precision is Crucial

This step demands precision.

Even slight variations in filling levels can cause issues later—the worst case being that the pressure will not hold the cork securely in the bottle.

The Final Touch

Finally, the MCC receives its finishing touches:

• The cork is inserted
• The wire cage is secured
• The bottle is shaken and checked again

And then it's complete.

At the end, we were right where the bottles came out of the machine and felt as excited as little children receiving their first bottles.

This moment held an unexpected amount of magic.

Handwork or Modern Technology?

Of course, we were curious: Is MCC production now fully automated?

Nadine's answer was straightforward: In most cases, yes.

However, there are still producers who have their bottles hand-riddled or intentionally execute this step traditionally.

This is what makes MCC so intriguing: between cutting-edge technology and true craftsmanship, there’s always room for personality.

Our Conclusion: MCC is Technique, Precision, and Emotion

There's much to read about sparkling wine production, but witnessing the process live changes your perspective entirely.

You suddenly comprehend how much precision, experience, and attention to detail truly infuses every bottle.

From the yeast deposit in the neck to the perfectly balanced dosage: Every step influences the quality, style, and character of the eventual MCC.

That’s precisely why a top-tier MCC does not merely taste like sparkling wine—it tastes like craftsmanship.

A Huge Thank You

A big thank you goes to Nadine and her entire team who reopened the facility for us after a long day of work to showcase every step of the MCC production process.

Such insights are rare to come by—this visit is one we won’t forget anytime soon.