Up until the 1950s, vodka was not used as a designation for Swedish distilled beverages, which were instead called brännvin ("burn-wine"), the word having the same etymology as the Dutch Brandewijn, which is the base for the word brandy. This beverage has been produced in Sweden since the late 15th century, although the total production was still small in the 17th century. From the early 18th century, production expanded, although production was prohibited several times, during grain shortages. Although initially a grain product, potatoes started to be used in the production in the late 18th century, and became dominant from the early 19th century. From the early 1870s, distillery equipment was improved.