Originally, a café-théâtre was a small room in a café

Café

A café , also spelled cafe, in most countries refers to an establishment which focuses on serving coffee, like an American coffeehouse. In the United States, it may refer to an informal restaurant, offering a range of hot meals and made-to-order sandwiches...

 or a cabaret

Cabaret

Cabaret is a form, or place, of entertainment featuring comedy, song, dance, and theatre, distinguished mainly by the performance venue: a restaurant or nightclub with a stage for performances and the audience sitting at tables watching the performance, as introduced by a master of ceremonies or...

, or even the café or cabaret itself, where people would put on spectacles

Performance

A performance, in performing arts, generally comprises an event in which a performer or group of performers behave in a particular way for another group of people, the audience. Choral music and ballet are examples. Usually the performers participate in rehearsals beforehand. Afterwards audience...

. These spectacles were mostly unconventional or of limited means, and could range from ordinary theatrical presentations to singing tours, and even improvisational theatre

Improvisational theatre

Improvisational theatre takes many forms. It is best known as improv or impro, which is often comedic, and sometimes poignant or dramatic. In this popular, often topical art form improvisational actors/improvisers use improvisational acting techniques to perform spontaneously...

.

Bernard Da Costa created the first Parisian café-théâtre in 1966 at the Royal Café.