The Great Sourdough Mystery

A story about patience, experiment and the science of baking.

Leila’s uncle ran a small bakery, and he had promised to teach her to make sourdough bread. The first step was the starter, a bubbling mix of flour and water that held tiny wild yeasts. He gave her a spoonful in a jar. “Feed it every day,” he said.

Leila fed it carefully. She mixed in flour and water each morning, and stirred it with a wooden spoon. She kept it on the kitchen bench. After three days, it looked flat, like grey porridge. There were no bubbles at all. “It is not working,” she said.

She phoned her uncle. “What is wrong?” she asked. “That is a mystery,” he said. “Let us be scientists. We will change one thing at a time and see what happens.” Leila fetched her notebook, and wrote, “Experiment One.”

“First, check the temperature,” said her uncle. “Yeast likes warmth.” Leila put a thermometer next to the jar. It read fourteen degrees. The kitchen was cold. She moved the jar to the top of the fridge, where it was warmer. She waited a day. A few tiny bubbles appeared.

“Progress,” she wrote. “Second, check the flour,” said her uncle. Leila had been using plain white flour. He suggested wholemeal, which has more wild yeast. She changed one jar to wholemeal, and left another with white as a control.

After two days, the wholemeal jar was alive. Bubbles popped on the surface, and a sour, fruity smell drifted up. The white jar was still sleepy. “Excellent,” said her uncle. “You have solved the mystery. Warmth and wholemeal flour.”

Over the next week, her starter doubled in size every day. She was ready to bake. With her uncle’s help, she mixed a dough, folded it gently, and left it to rise overnight. In the morning, it had puffed up like a pillow.

They baked it in a hot oven. The crust turned deep gold and crackled as it cooled. Leila cut a slice, and the crumb was soft with big, airy holes. She buttered it, and took a bite. “It is the best bread I have ever tasted,” she said.

Her uncle laughed. “Because you made it,” he said. “And you worked out why it was not working.” Leila wrote in her notebook, “Mystery solved,” and drew a small loaf with a smile.

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