Cómo extraer aceite de ricino. El árbol y sus semillas.

Let's see how to make oil from the seeds of Ricinus communis, a very common shrub and easy to find in the wild as an invasive plant, except in cold countries. Each country has its own popular name, the most well-known being "risino" (the castor bean plant), but also some specific features of the shrub and its seeds.