Showing how a full barn can handle plenty of berries, roots and onions. I put these in the trading post to show the difference between the mushrooms and the other gathered food. The Mushrooms at 9999 take up 67% of the trading post space, and 9999 each of berries roots and onions all together take up only 56%. Prompted me to begin selling mushrooms. I also discovered, the houses carried less mushrooms by about 30% than the other fruits, veg, grain and proteins.