Kashau (קאשוי) is a hasidic dynasty, named after Kassa (Košice), the town where it originated.
Kashau has institutions in Williamsburg, Monsey, and Bedford Hills in New York State.
[citation needed] The dynasty's first rebbe, Refuel Blum, was born in the town of Kassa (Kasho), Hungary (today in Slovakia).
After an unsuccessful attempt in 1962 to establish a community in Morris County, N.J. he bought property in Irvington, N.Y. where he reestablished his yeshiva.
[1] In 1977, after a fire destroyed the Irvington property, he bought the Hillcrest Center for Children in Bedford Hills, NY and established Kahal Adas Kasho.