What brand of champagne did they drink on Absolutely Fabulous?

While the specific brand of champagne is never explicitly named on Absolutely Fabulous, the champagne of choice for Patsy and Edina is almost always Bollinger.

This is evident through several visual cues, including:

* The iconic bottle shape: Bollinger's bottle has a distinctive, slightly elongated shape that is often seen in the show.

* The label: Though obscured at times, the label on the bottle often resembles the classic Bollinger label.

* The "Bollinger" references: The characters occasionally make verbal references to "Bollinger" within the show.

However, it's important to note that while Bollinger seems to be their preferred champagne, other brands may also be featured on the show.