Student or Learner
If we order coffee in a restaurant, we can say "a coffee, i.e a cup of coffee.
However, if we say "a glass of orange juice" which of the following sentences is correct?
1. a orange juice
2. an orange juice
"Orange" starts with a vowel sound.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.