Having gone for the first 2 years, I can recommend checking out the Farm Fresh Fare (new name, but, same idea as other years) at the Green Living Show. With some show you have to pay $20 to get in and then pay for sample tickets but I find that the Green Living Show offers up quiet a bit of "food" related stuff plus you can get free tickets if you bring in some e-waste. It is my favorite of the food/drink type shows (they have a highlight on beer this year) even though it isn't a food/drink show!
Here is a link to the Farm Fresh Fare with different restaurants featured:
There is also a food "market" area with some decent deals to be had on fresh bread/etc and lot of extra free samples (Last year Organic Garage was sampling a bunch of different products plus President's Choice was giving out full bananas, yogurts, etc).
Here is the details on the free tickets if you bring in e-waste (i.e. old keyboard/computer/etc) - thanks to Samsung for that :) :