The word biscuit embodies the process by which this form of bread was made from time immemorial down to within the last century. Bis (twice), and coctus (cooked), show that they were twice baked.
Fragments of unfermented bread were discovered in the Swiss lake-dwellings, which belong to the Neolithic age.
Fermented bread is seldom seen in Northern Europe and Asia except among the rich or the nobility. At one time, the captain of an English vessel requested a baker of Gottenburg to bake a large quantity of loaves of raised bread. The baker refused to undertake an order of such magnitude, saying it would be quite impossible to dispose of so much, until the captain agreed to take and pay for it all.
I made a study of the ancient and indispensable art of bread-making, consulting such authorities as offered, going back to the primitive days and first invention of the unleavened kind, and traveling gradually down in my studies through that accidental souring of the dough which it is supposed taught the leavening process, and through the various fermentations thereafter till I came to "good, sweet, wholesome bread,"—the staff of life. Leaven, which some deemed the soul of bread, the spiritus which fills its cellular tissues, which is religiously preserved like the vestal fire,—some precious bottleful, I suppose, brought over in the Mayflower, did the business for America, and its influence is still rising, swelling, spreading in cerulean billows over the land,—this seed I regularly and faithfully procured from the village, until one morning I forgot the rules and scalded my yeast; by which accident I discovered that even this was not indispensable, and I have gladly omitted it ever since. Neither did I put any soda or other acid or alkali into my bread. It would seem that I made it according to the recipe which Marcus Porcius Cato gave about two centuries before Christ: "Make kneaded bread thus: Wash your hands and trough well. Put the meal into the trough, add water gradually, and knead it thoroughly. When you have needed it well, mold it, and bake it under a cover," that is in a baking kettle.—Thoreau in Walden.