A very popular foodie event in the North East is 'Taste Grampian', I've not been to one yet but going this year, its on Saturday 7th June 2008 at the Thainstone Centre near Aberdeen. Here's the web site for the event; http://www.tasteofgrampian.co.uk/home/index.cfm?id=1
One place that I hope has a stall is a great delicatessen that I recently found. Its in Aberdeen city and its called 'RockSalt and Snails'. Seems like it is a bit of a secret treasure as most people don't know it exists. The delicatessen is downstairs from the 'RockSalt and Snails' coffee shop; which is nice but normally has a few too many mothers and toddlers on a Saturday morning to be relaxing. But go down the stairs at the back and your in specialist food stuff heaven! What really stands out is the amount of local and British produce, sure there's Italian Olive oils and Brazilian coffee beans, but I recently brought some of the best cheese I've tasted here, and it was made in Aberdeenshire.
This is the site, but I would recommend a visit to the shop to stock up your store cupboards!