A survey by the Ministry of Fisheries in Japan has found that the country's domestic rapeseed yields have doubled over the past 10 years, reaching 3560 tons in 2020, which is 2.3 times higher than the production in 2010. Despite a 14% decrease in production in 2020 compared to the previous year, the yield per hectare in Hokkaido is about three times that of other prefectures, leading to a national increase in yield. However, the use of domestic rapeseed oil is only 1%, largely due to the lack of demand and the high cost of domestic products compared to imported ones. The ministry plans to promote the spread of varieties with low glucosinolates to increase the use of domestic products and create an environment where major oil refiners can use them.