Funny that JS as dont know how long it has been going, but in South Africa there is a Herb Bush (Name i cannot recall) which is as sour as it comes, believe me when i say its sour! Anyway it has been used for the treatment of Venereal Diseases for ages, and it works !
I know that taste ,as i tried it once for laughs wasnt a good smile on my face after LOL
cHEERS