Did you notice any other differences in the cookies, or do you have any other comments about the experiment? Gases contract and no longer exert pressure on cell walls. Without this pressure, products...

Did you notice any other differences in the cookies, or do you have any other comments about the experiment?

Gases contract and no longer exert pressure on cell walls. Without this pressure, products that do not have porous cell walls and are without suffi cient structure (such as souffl és and underbaked items) collapse.