Handling sparkling wine

Chill it properly before opening. Cold wine holds carbon dioxide better and foams far less.

Do not shake it, obviously — but also avoid carrying it upright in a warm car, which does something similar more slowly.

Pour at an angle into a tilted glass, as with beer, and pour in two stages if the foam rises.

A proper sparkling stopper genuinely works and will keep an opened bottle fizzy for a day or two. The teaspoon-in-the-neck trick does not.

Flat sparkling wine is not spoiled, just disappointing. It is still fine for cooking or for a spritz.