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