The risks confronted by early teetotalers are vividly depicted in an incident retold by Norman Longmate in his book "The Waterdrinkers" (London, 1968) p. 55: in Warrington in 1830 an ex-drunkard asked his local temperance society for a teetotal pledge to sign, only for a friend to try physically to prevent him, calling out, "Thee musntn't, Richard, thee'll die." There was no significant production of non-alcoholic temperance drinks until a sufficient demand existed for them among teetotalers. An important influence on their development was the Great Exhibition of 1851, from which alcoholic drinks were banned. Even more important was the development of pasteurisation later in the century, which made it possible to produce stable fruit-based soft drinks.