Perhaps a work around could be having the farmer sell actual food items of the same name?

Making there be a store in the same room selling 'large red strawberries' couldn't be too much of an issue, and I'd personally love having strawberries to eat in the game. Along with other vegetables. Sell them for a few silvers more than he accepts them for, so he makes a profit and the people who farm for them have a way to eat what they reap.

- Kith