at a higher altitude why does it take longer to cook
The reduced air  pressure lowers th â¦ e temperature at which water boils in an open  container. So, water actually boils faster at higher altitudes, but  it takes longer to cook foods because the water boils at a lower  temperature.This lower temperature slows down the physical and  chemical changes that take place when foods are cooked in water.he boiling point of any liquid is dependent upon the pressure of  the atmosphere above the liquid therefore water boils at a lower  temperature at higher altitudes. Because â¦ of this, the pasta takes  longer to cook in the cooler boiling water. found this useful.