Great info, visit this :-
http://www.derekthomas.co.uk/beer/tastesinbeer.htm
21 tastes of beer and why
Re: 21 tastes of beer and why
Excellent link, OTH. 

Re: 21 tastes of beer and why
That's a useful link but there are some mistakes. DMS is a characteristic flavour of lagers for starters. It's also now known there are five basic tastes (the savoury 'umami' is the other one) and the receptors are not grouped on the tongue as previously thought.
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