Why doesn’t my champagne sparkle?

When a glass of champagne is poured, the bubbles are a joy to watch. Champagne contains carbon dioxide, as well as tiny dust particles in the glass. Why does the champagne lose its sparkle? Is the champagne flat? Has it gone off?

Someone has cleaned the bottle too thoroughly.

Champagne, as the name suggests, is a sparkling wine. The sparkle in most soft drinks is produced by carbon dioxide (CO₂), whereas champagne uses the CO₂ naturally formed during the alcoholic fermentation of the sugar in the grape juice, which has been fermented by yeast. The bottles are then sealed so that the CO2 generated does not escape, increasing the CO2 concentration in the champagne.

If your champagne isn’t as fizzy as you’d expect, it’s because the glass is too clean. The bottle contains impurities that help the CO₂ bubbles linger longer, resulting in a more consistent fizz. CO₂ is released when it comes into contact with the micro-limescale contained in the dirt inside a glass. The fizz in champagne increases, so if you don’t want to waste your champagne, use another glass without cleaning it.
If your champagne is past its best-before date, it may not be safe to drink.

A loss of fizz in champagne can be due to the drink having gone off or to poor storage. How can you tell?

If the champagne is not stored properly, the CO₂ will dissolve in the liquid and the champagne will not have enough effervescence. If the champagne is not sparkling, here is another reason.
The darker the colour, the more oxidation has taken place, and the golden colour turns more yellow.
If you leave the champagne to stand for too long, not only does the carbonation disappear, but the fresh scent also fades. All that remains is the aroma the champagne has acquired through ageing. You’ve waited too long to drink it, and now it has gone off.
Champagne that has lost its carbon dioxide feels less acidic on the palate. It would feel as though you were drinking flat juice with no fizz at all.

Keep your champagne sparkling by preserving the bubbles.

To keep the champagne bubbles strong, pour the champagne into a thin-walled glass that is slightly wider at the top.

The glass should not be rinsed before serving, as rinsing will remove tiny impurities from the glass. These impurities are not good for you and cause the gas to become trapped inside the glass, creating bubbles.

The cooler the champagne is when served, the more fizz it will have.

Keep your champagne cool by using a cork.

Professionals use champagne towers to keep the champagne bubbly for a long time. This method is used alongside other preservation techniques to maintain the quality of the champagne.

If your champagne has lost its bubbles and you want to reuse it, you can turn it into vinegar. You can also use champagne that has lost its bubbles in other recipes.