Could we introduce harvestable mushrooms to the game?
To make them you would need to make compost, which would require a compost box. You basically throw vegetable stuff in and fill with water, wait for it to rot. When it is ready it should be releasing a white vapour from the decomposition of the vegetable matter.
We than fill a smaller version of a tpp made specially for mushrooms with compost and place in a mushroom box, fill it with water and wait for the mushrooms to grow.
We could have some as low hunger variety food and others as curios or even medicine igredients.