Riosa was a planet located in the Inner Rim region of the galaxy. Shortly after the birth of the Galactic Empire, Riosa was annexed and its factories were commandeered, with workers forced into mandatory labor and pushed to their limits to produce components to be used in the construction of both the first and second Death Stars. The planet was frequently visited by Darth Vader to enforce production quotas. Beverages originating from Riosa included Riosan mead and Riosan liqueur.