Roast Beef by Gertrude Stein is a prose poem that is part of her book Tender Buttons, a collection of experimental poems that explore the nature of language and perception. The poem is made up of a series of short, repetitive sentences that describe the process of roasting beef. Stein's use of language is unconventional and disorienting, creating a sense of ambiguity and uncertainty. The poem has been interpreted in many different ways, but it is generally seen as a reflection on the nature of reality and the limits of language.