H Mart
Grocery store
210 Amsterdam Ave
h
The letter "h" is called "aitch" in most English dialects. Therefore, when saying "a/an h," the correct answer is "an." However, it's essential to remember that the determination of "a" or "an" depends on how the word is pronounced, not just the letter itself.
Follow ups
Pronounciation of the letter H
Should we use "a" or "an" before an acronym starting with H?
Why British people pronounce the letter “H” as haych?
Sources
