In this ambitious book Christian Petersen has taken a central topic in economic and social history and given it a new sweep and coherence. As the Lord's Prayer suggests, securing an adequate supply of bread was a matter of over-riding concern to everyone until very recently. Bread was always by far the largest single item in the budgets of the poor, but bread could be made from many grains - wheat, rye, barley etc. Christian Petersen describes how in the later eighteenth century the process of replacing other cereals by wheat in bread making was completed throughout Britain. He provides a...