Warm water activates the yeast in paratha dough by providing an optimal temperature for the yeast to feed on sugars and produce carbon dioxide, which helps the dough rise and become light and fluffy. The ideal temperature range is typically between 105°F and 115°F (40°C and 46°C).
Yeast is a living organism, and like all living things, it thrives within a specific temperature range. When making paratha, warm water is used to create an environment where the yeast can effectively ferment. Here's a breakdown of why warm water is crucial:
Activation: Warm water wakes up the dormant yeast cells. It rehydrates them and allows them to become active again.
Feeding: The warmth encourages the yeast to start feeding on the sugars present in the flour. This process is called fermentation.
Carbon Dioxide Production: As the yeast feeds, it produces carbon dioxide (CO2) as a byproduct. This CO2 gets trapped within the dough, creating air pockets.
Dough Rising: The trapped CO2 causes the dough to rise, making it lighter and more airy. This results in a softer and more pliable paratha.
Flavor Development: Fermentation also contributes to the flavor of the paratha. The yeast produces subtle flavor compounds that enhance the overall taste.
If the water is too cold, the yeast will remain inactive or work very slowly. If the water is too hot, it can kill the yeast, preventing the dough from rising altogether.
Always check the temperature of the water with a thermometer to ensure it's within the optimal range. Using water that's too hot is a common mistake that can ruin your paratha dough. If you don't have a thermometer, the water should feel comfortably warm to the touch, like bathwater.