noun
Champagne cider
A carbonated soft drink that resembles champagne; a non-alcoholic sparkling beverage often served at celebrations.
子供たちはお祝いにシャンペンサイダーを飲んだ。
The children drank champagne cider at the celebration.
Variant with a middle dot; less common but still seen.
Wasei-eigo (Japanese-made English) combining 'champagne' and 'cider'. The exact origin is uncertain, but it likely emerged as a marketing term for a champagne-flavored soft drink.