Understand fermentation processes used in everyday food production like bread and curd.
Introduce food spoilage.
High concentrations of salt, sugar, and spices act as a protective shield! They create an environment where microbes simply cannot survive or multiply. That is why your grandmother's pickles and murabbas can stay safe and delicious for months without rotting.
Explain how yeast raises dough.
Have you ever wondered what makes breads, cakes, and bhaturas so soft and fluffy? The secret ingredient is a tiny, living microorganism called yeast!
Comic of yeast eating sugar and making dough fluffy
Yeast feeds on sugar and releases carbon dioxide gas, which gets trapped and makes the dough soft and fluffy.
Compare Yeast and Lactobacillus outputs.
Remember: Both of these helpful microbes require a warm environment to work efficiently!
Test understanding of fermentation.
A student kneads dough with yeast and sugar, and leaves it in a warm place. After 4 hours, the dough has risen significantly. Why did the dough rise?