Because food is something we can't live without, I contend that food-related industries will be stable throughout the recession and beyond. Not all jobs in the industry will thrive, but many will.
If you're interested in working in this field, take a look at the following resources to see what jobs might work for you.
Agriculture (meat and plant)
Occupations such as administrative, accounting, human resources, and other not-so-obviously-food-related jobs are necessary to support the food industry. So if you're in one of those lines of work and your industry's looking shaky, consider sliding over into the food industry.