Dealing With A Hoarse Voice
Why our voices get Hoarse is because our Vocal Chords are swollen and cannot meet and vibrate properly. It makes little difference what you eat and drink as none go near the vocal chords but goes to the stomach. However it matters what is absorbed into the blood stream. So do keep up your fluid intake and avoid Alcohol. Also put yourself on complete vocal rest for a few days No Speaking and No Singing.
Is fantastic for a Hoarse Voice, but it is also wonderful for general vocal hygiene I would recommend all singers to Steam regularly especially coming up to that important gig.