It takes more time to cook potatoes on mountain tops because

It takes more time to cook potatoes on mountain tops primarily because atmospheric pressure is low. At higher altitudes, such as mountain tops, the atmospheric pressure is lower compared to sea level. This reduced atmospheric pressure lowers the boiling point of water. Since cooking involves boiling water to cook potatoes, the lower boiling point means that water boils at a lower temperature at higher altitudes than it does at sea level. Consequently, the lower temperature requires more time for the potatoes to cook thoroughly. Therefore, despite the temperature at the mountain top potentially being lower than at sea level due to factors like altitude and weather, the crucial factor affecting cooking time is the reduced atmospheric pressure, which affects the boiling point of water and thus the cooking process. Understanding this effect of altitude on cooking times is essential for planning meals and cooking effectively in high-altitude environments.