Speak to me of your ways.
You mean the firewood trading economy?
Here's how it works - firewood and ale are the most profitable goods you can make. The reason is because logs are cheap, and firewood is expensive, and one log produces lots of firewood from an educated log cutter.
So, once you reach a population of 100 or 200 (I think that's the threshold for merchants to start bringing in the max amount of goods), you spam trading posts and woodcutters and stockpiles.
Have them all fairly close together in order to minimize travel time, and produce firewood like a madman. Buy as much raw logs as you can. Stock your trading posts with firewood. You can buy food with the firewood. Set your traders to auto purchase logs and food. Now you'll have a shit ton of food.