Lay in a bowl two Boston or graham crackers split; sprinkle on a pinch of salt, and cover with boiling water. Set the bowl in a saucepan of boiling water, and let it stand half an hour, till the crackers look clear. Slide into a hot saucer without breaking, and eat with cream and sugar. As they are only good hot, do just enough for the patient's appetite at one time.
The Easiest Way in Housekeeping and Cooking (1903).