In traditional bread bakeries in rural Italy, bread for a new day is started with a bit of unsalted starter taken from yesterday's bread making. The starter is known as "biga", pronounced bee-ga. No new dry, cake or wild yeast is added, just a cup or so of yesterday's biga. Of course, since the concentration of yeast cells is lower than in a packet or more of purchased yeast, the bread takes longer to rise. It simply takes longer for the yeast cells to multiply to the point that enough CO2 is released to raise the bread. But the slow rise contributes to the very well developed, distinctive flavor of these country loaves. Plus you can go away to work or whatever for the day and come back to bake it later on.
You only need your first biga to get started. Then it is simply a matter of making bread at least once a week or so if you have refrigeration to keep the biga alive. If you don't have refrigeration, you would want to make bread every day and save a portion of the new dough you make each day as a starter for tomorrow's bread. Just take that portion BEFORE you add salt to the new bread dough. In this case, you would keep tomorrow's starter at room temperature. Below is a simple biga recipe. Use as you would a sourdough starter. For a rough guide, use approximately one cup of biga for a bread recipe calling for 7-8 cups of flour.
An excellent book with lots of recipes using biga cultures is "The Italian Baker" by Carol Field. ISBN 0-06-181266-8
I have made this and there is no comparison to store bought breads. It is a whole different kind of eating and you WILL be spoiled by it. Try the Pane Pugliese for one. Incredible stuff and perfectly suitable for a survival scenario...Geri Guidetti, The Ark Institute
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Revised: 16 Nov 98