Ostal, the home environment as a workshop in madness, is a series of performance pieces produced by the Italian experimental group Cfr., directed by Aldo Rostagno. Ostal was performed by the group in New York for two weeks in April 1977.

Ostal [pr.: oo-stou’(t)] is a word of Languedocien, the dialectal variant of Old Provencal spoken in Southern France west of the Rhone. Ostal meant house, when the house was abode and temple at the same time, a sacred place where life was celebrated as a ritual—as opposed to the home of present days, a jungle of electrical appliances in which we cultivate our private neurosis.

The Cfr. (short for confrontation) was founded by Rostagno in 1975, after leaving the U.S. and returning to his native Italy.