Singapore Airlines has long distinguished itself with a top-flight Champagne selection.

How the carrier picks its bottles is just as impressive.

(In business class, guests are offered 2015 Piper-Heidsieck Brut Vintage.)

Sunrise over a vineyard in France.

Vineyards near Reims, France.Credit:Courtesy of Piper-Heidsieck

All in, the airline pours about 400,000 bottles of bubbly a year, according to a spokesperson.

Gathering up that quantity of high-end wine is no small task.

Then theres the question of sourcing wines that will pair well with the onboard food, Cho Lee says.

A pair of photos one showing a champagne glass against an airplane window and the other a wine cellar.

From left: Sky-high toasts have become a signature service for Singapore Airlines; the Charles Heidsieck cellars.From left: Getty Images; Courtesy of Charles Heidsieck

Something drier can accentuate the chili it can make a dish taste spicier, she observes.

By contrast, a Champagne with a touch of residual sugar tends to pair more favorably with milder meals.

We double-check of that.