https://en.wikipedia.org/wiki/Bark_bread

During the 18th and early 19th centuries, Northern Europe experienced several very bad years of crop failure, particularly during the Little Ice Age of the mid-18th century. The grain harvest was badly affected, and creative solutions to make the flour last longer were introduced. In 1742, samples of "emergency bread" were sent from Kristiansand, Norway, to the Royal Administration in Copenhagen, including bark bread, bread made from grainless husks and bread made from burned bones.

Don't tell or he might get some ideas for what do with the poor

The last time bark bread was used as famine food in Norway was during the Napoleonic Wars. The introduction of the potato as a staple crop gave the farmers alternative crops when grain production failed, so that bark bread and moss cakes were no longer needed. ... in Finland, pettuleipä (literally "pinewood-bark bread", made with cambium [phloem] flour) was eaten in Finland as an emergency food when there has been a shortage of food, especially during the Great Famine of the 1690s,[7] during the second famine of the 1860s, and, most recently, during the 1918 civil war

Libertarianism is in good company