Summary
Highlights
Sliced bread is a global staple, consumed in vast quantities. The video explores how this soft, delicious bread, used for sandwiches and toast, is produced. It briefly touches on the history of bread, mentioning ancient Egyptian origins and the 1928 invention of sliced bread by an American baker, revolutionizing its consumption.
The process begins with flour made from wheat. Wheat is cleaned, soaked for up to 24 hours to remove husks, and then milled using steel rollers and sieves until the desired flour consistency is achieved. Safety precautions are highlighted during flour transportation, as it's a combustible powder. This bakery receives nearly a thousand tons of flour weekly, stored in large silos.
At the heart of the factory, a gigantic bread production line bakes and packages 1.5 million loaves weekly. Flour from tanker trucks is pumped into silos. Yeast, a crucial ingredient, is temperature-monitored. Ingredients like flour, yeast, oil, vinegar, sugar, salt, water, fat, and preservatives are precisely weighed and mixed in a giant mixer. Smaller ingredients like seeds are added manually. The mixer forms an elastic, sticky dough, working rapidly for eight minutes to create a one-ton dough batch capable of filling 600 bags of sliced bread.
The dough is then divided into equal pieces, with mechanical arms cutting it into individual loaf-sized portions at a rate of 192 per minute. These dough portions are transformed into balls, coated with flour to prevent sticking, and then shaped rapidly by a molder. The dough is rolled precisely and placed into baking molds for fermentation.
The molds, containing the dough, undergo a three-hour fermentation period. During this time, yeast acts on the dough, causing it to rise significantly. The dough rests in a fermentation chamber on movable shelves, allowing small air bubbles to form, making the dough soft. After about eight minutes, the first fermentation is complete, followed by stretching to remove air bubbles. At 45 degrees Celsius, yeast breaks down flour, releasing carbon dioxide bubbles that cause the dough to rise. After 50 minutes, finishing touches like flour or seed toppings are added.
The risen dough loaves enter large ovens, heated to 260 degrees Celsius. The oven is 39 meters long and ensures even baking by circulating air around the molds. Loaves bake for 20 minutes, emerging with a golden color. After baking, loaves are removed from molds and placed on a conveyor belt to cool. They rotate through enormous cooling towers for about two hours in a temperature-controlled environment. Cooling allows the bread to settle, become denser, and maintain its rectangular shape, forming a standard crust.
Once cooled, the loaves are sent to a slicer, which cuts 65 slices per minute using 2-meter wide steel blades replaced every two weeks. Each loaf yields 20 slices. The sliced bread is automatically packaged into bags at the same rate, ready for distribution. The entire process, from dough preparation to packaging, takes five and a half hours.