http://www.youtube.com/watch?v=ZVwJl5QbEro Non-garlic butter preparation.
Gordon Ramsay's snails - http://www.youtube.com/watch?v=-ju7_ZORsZw
You don't have to do the carrot business with the giant ones since you're only eating the foot, but it is important to boil them first to kill off any errant cooties. Gastropods can cause menengitis if not prepped correctly.
When in doubt, ask a professional chef.
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