There are food writing courses and programs throughout the U.S.
If you are interested, the class I am taking is the Writing Salon in San Francisco and Berkeley, California, at http://www.writingsalons.com
I've also taken weekend seminars at Book Passage in Corte Madera, California.
I also recommend checking out author and writing teacher Dianne Jacob's book, Will Write for Food. Dianne's website is http://www.diannej.com She has info on her book and food writing tips posted there.
I also know of seminars in Greenbriar, West Virginia; Los Angeles, California and through New York University in New York City. I am sure there are lots of others out there.
If you know of others, post a comment below and I'll add it to the list.
Go out there and get writing!
(I should take my own advice.)