It looks very close to http://Bonn Caps (Bold) an old Font Bureau font [1992] but I don't know if it's still available.

Might be hand lettered.

Similar font, Arquitecta Black http://www.myfonts.com/fonts/latinotype/arquitecta/
Don

Looks alot like Michael Schwab's wonderful lettering.

I think it is hand done - that would fit the poster model.

Thanks :-))))

I agree with Bob. Looks like poster design to me.
Don

I agree Mike. This would fit right in with his posters.
And here it is!
http://www.michaelschwab.com/posters/post_veg02.html
Don

Bingo! Thanks for finding it, Don.

And thanks Mike for the reminder about lettering master Michael Schwab. This is a perfect case of where lettering with it's subtle variations trumps a font with its precision or artificial grunge/rugged treatment.
As for fonts, the closest to the GARLIC letters is Neville Brody's orphan font, Bonn Caps Bold, found by Fivos. To make something similar from a legitimate source we are struck with something like Arquitecta Black.
Don

I should have walked into my wife's office after I looked at the Garlic Poster- she has had this poster on her wall for years.

http://www.michaelschwab.com/posters/post_pk05.html