Now my big question, what do i do now?
My best suggestion would be to try and repeat it, at least a couple of time, on your own. If the results are as spectacular as you tasted, when the chef was there, you could be on to a winner.
As for getting rich quick, I somehow doubt it. Perhaps Pat Chapman made a bob or two by publishing dozens of books but most of the other writers probably struggled to break even. It's a relatively small, niche market.
George is absolutely right.
I've been involved in publishing in one form or another most of my life, and can tell you that in terms of sales for your eBook you need to be thinking in the hundreds, rather than thousands. (Of course, over time, this will gradually build - especially if you also launch on the Kindle market. But be aware that Amazon take 30% in the UK, and 70% of some overseas sales. You'll also need to register for US tax for the eight Kindle copies you're likely to sell to the American market via Amazon.)
I'm not trying to dampen your fireworks, but unless you've put a book together before, then prepare for a lot of hard work. It isn't easy!
That doesn't mean that it isn't fun and tremendously rewarding, but it is most definitely time consuming. If you're planning a decent size book (100 pages or more) that includes a good range of recipes, supporting information, images, and possibly a few video links, I'd recommend that you allow yourself at least six months to do the job properly.
Other things to consider when producing PDFs is that, unless you're wealthy enough to own a suite of Adobe professional publishing software (Acrobat Pro, In Design, etc), you're going to encounter a few compatibility issues when it comes to converting content to PDF format from other programs (MS Word, etc.). What you see is most definitely NOT what you often get!
Nothing insurmountable, but as I'm sure Julian Voigt and other PDF book authors will tell you, it can cause some headaches.
Then there are other details, such as editing/proofing. It may be that you're perfectly happy with your writing skills, but even so, the best writers in the world need their work proofing before it's published.
This can be expensive, but I'm sure that you'll get offers from a few generous and literate souls on here.
As said, I'm not trying to put you off - particularly as I want a copy of the book when it comes out - but it's always best to be well aware of exactly what you're getting into before embarking on noble projects such as these.