I made almond butter today. Why because I wanted to try to it kept showing up in contemporary and medieval recipes.
Nowadays we make almond butter as a healthy butter substitute. However in medieval times they made it for lent.
In the middle ages on fast days, Christians were not allowed to eat animal products (from mammals that is), such as butter. The alternatives were mostly olive oil for cooking and almond butter for other uses. In Denmark and the rest of Northern Europe, this coursed problems as both were expensive imports.