Unleavened Bread is a 1900 novel by American writer Robert Grant, and one of the best selling books of that year. It was also adapted into a Broadway play in 1901, directed by Leo Ditrichstein. Robert Grant (1852-1940) was an American author and a jurist who participated in a review of the Sacco and Vanzetti trial a few weeks before their executions. In "Unleavened Bread," A businessman's selfish wife forces her way into upper society. A dramatization or Robert Grant's much talked-of novel, by Leo Ditrichstein, was remarkably well acted in the Savoy Theatre last night, and is likely to be a live theatrical topic for a few weeks at least. It was received with abundant applause by an uncommonly friendly and appreciative audience.