Finding the right book title is a nightmare!
There have been some great suggestions already, but it's always worth checking that the title you go for hasn't been used before. Many have, and often a number of times.
For instance, a search for 'Pot of Gold' in Amazon books yields over 2,000 hits:
http://www.amazon.co.uk/s/ref=nb_sb_noss?url=search-alias%3Dstripbooks&field-keywords=the+pot+of+gold&rh=n%3A266239%2Ck%3Athe+pot+of+gold Using an already common existing title isn't a problem if you're just going to stick to a PDF based eBook release, but if you have any plans at all to take it to the next level and launch it as a Kindle, or even a print version, then you need a title that makes it easy to find in searches.
In this regard it always helps massively if there is something in your title that relates to what the book is about - hence we have Julian's 'Secret to that Takeaway Curry Taste', Mick Crawford's 'British Indian Restaurant (BIR) Style Cooking', etc.
The titles may not be particularly imaginative, but type 'BIR', or 'curry secret' into Amazon books and see what comes up.
You can, of course, elect to call your book 'Pot of Gold', but add a subtitle containing some keywords (such as 'Pot of Gold - The Real Secret to BIR Cookery at Home', or something.)
Anyway, something to think about...