This is claimed by a group west of the cities, that is holding a workshop on growing nutrient dense fruits on high yielding, disease and pest resistant plants on Sat 9/10.

I happened upon a flyer at my local Co-op and just registered. Not free and it's the kind of thing that only a gardening nerd could appreciate. About 5 hours of instruction and demonstration, with methods and techniques, including tasting of same plant in differently amended soils.

http://thetomatoproject.net/