Butter and water mixture is brushed on the pies in Sara museum cottage, where local baker Pirkko Lensu makes Finnish national pastry Karelian pie in traditional environment in Lemi, Finland, Sept. 2, 2019. Karelian pies are typically traditional Finnish food with more variations have been developed nowadays. But the traditional recipe has been well protected and inherited. (Photo by Matti Matikainen/Xinhua)