Yes, altitude affects dosa batter fermentation. Higher altitudes generally lead to faster fermentation due to lower atmospheric pressure.
Altitude significantly impacts the fermentation process of dosa batter. Fermentation relies on the activity of microorganisms, primarily bacteria and yeast, which thrive in specific environmental conditions. At higher altitudes, the atmospheric pressure is lower. This reduced pressure can accelerate the expansion of gases produced during fermentation, such as carbon dioxide. As a result, the batter tends to rise and ferment more quickly compared to lower altitudes. The lower boiling point of water at higher altitudes can also indirectly affect the fermentation process by influencing the temperature of the batter. It's crucial to monitor the batter closely and adjust the fermentation time accordingly to prevent over-fermentation, which can lead to a sour or undesirable taste.
When fermenting dosa batter at high altitudes, reduce the fermentation time by a few hours and check the batter's consistency and aroma more frequently. You might also consider using slightly less fenugreek seeds, as they can contribute to a more rapid fermentation.