pierogi

In English, this term is frequently used as both a singular and plural noun, reflecting a common tendency to adopt foreign loanwords without modifying their original grammatical structures. While the Polish language distinguishes between the singular pieróg and the plural pierogi, English speakers typically use the plural form to refer to a single dumpling or a whole plate of them.

Because of this linguistic overlap, you will see "pierogi" used in contexts like "a pierogi" or "many pierogi." While some writers use "pierogis" to explicitly mark the plural in English, this is often viewed as redundant or incorrect by those familiar with the original Polish source.