A jarbook or a book-in-a-jar is an exotic book format. A strict definition can't be made, but, typically, jarbooks are books whose contents are written on pieces of paper, which are tied like a pergament and then placed in a jar, whilst the label of the jar could be considered a replacement of the front cover of a regular paperback

Paperback

Paperback, softback or softcover describe and refer to a book by the nature of its binding. The covers of such books are usually made of paper or paperboard, and are usually held together with glue rather than stitches or staples...

 or hardcover

Hardcover

A hardcover, hardback or hardbound is a book bound with rigid protective covers...

 edition. This format is suitable for poetry

Poetry

Poetry is a form of literary art in which language is used for its aesthetic and evocative qualities in addition to, or in lieu of, its apparent meaning...

 books and other books where the order of the content isn't very important.

In 2003, the Romania

Romania

Romania is a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea...

n publishing house Humanitas has published four such jarbooks, out of which one is an anthology of international poetry entitled Eternul femenin (The Eternal Feminine), and the three others are selections of poems by Leonid Dimov

Leonid Dimov

Leonid Dimov was a Romanian postmodernist poet and translator....

, Emil Brumaru

Emil Brumaru

Emil Brumaru is a contemporary Romanian writer and poet.- Works :* Versuri , 1970* Detectivul Arthur , 1970...

 and Şerban Foarţă

Şerban Foarţă

Şerban Foarţă is a contemporary Romanian writer.-Works:* Texte pentru Phoenix , Litera Publishing House, Bucharest, 1976 * Simpleroze , Facla Publishing House, Timişoara, 1978* Şalul, eşarpele Isadorei/Şalul e şarpele...

. These are the only well-known examples of jarbooks.