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