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