What's the plural form of sparkling cider? Here's the word you're looking for.
Answer
The noun sparkling cider can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be sparkling cider.
However, in more specific contexts, the plural form can also be sparkling ciders e.g. in reference to various types of sparkling ciders
or a collection of sparkling ciders.