Sodas, alcohol, cooked tomatoes like marinara sauce, citrus fruits or juice, caffeine, chocolate and peppermint tea or gum all cause acid reflux that burns the mucous membrane of the vocal cords. The result is irritated and inflamed vocal cords, which translates into raspiness/hoarseness and a compromised vocal range. If you’ve been losing your voice for more than 3 months and have lost a good portion of your range, go see an ENT who specializes in singers voices. Foods that are more soothing are organic unfiltered honey? Decaf or throat coat teas and licorice.